initial commit

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diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,82 @@
+# Hack.Chat v2
+
+This is a backwards compatible continuation of the work by Andrew Belt [https://github.com/AndrewBelt/hack.chat](https://github.com/AndrewBelt/hack.chat). The server code has been updated to ES6 along with several new features- including new commands and hot-reload of the commands/protocol.
+
+## Getting Started
+
+These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.
+
+### Prerequisites
+
+What things you need to install the software and how to install them
+
+```
+    node >= 8.10.0
+    npm >= 5.7.1
+```
+
+### Installing
+
+Clone this git and cd into the directory. These steps will get a development env running:
+
+```
+npm install
+```
+
+Or on a Windows machine with Yarn installed:
+
+```
+yarn install
+```
+
+Then:
+
+```
+node main.js
+```
+
+The configuration script will execute the initial server setup by requesting input. Follow the steps until it finishes:
+
+```
+Note: npm/yarn run config will re-run this utility.
+
+You will now be asked for the following:
+-     Admin Name, the initial admin username
+-     Admin Pass, the initial admin password
+-           Port, the port for the websocket
+-           Salt, the salt for username trip
+​
+prompt: adminName:  admin
+prompt: adminPass:  ****
+
+prompt: websocketPort:  (6060)
+prompt: tripSalt:  ************
+
+Config generated! You may now start the server normally.
+```
+
+You may now begin development or deploy to live system with a node process manager.
+
+## Deployment
+
+After configuration, push everything except the node_modules folder to the live server and re-run:
+
+```
+npm install
+```
+
+You can now run start the server software with a process manager like PM2.
+
+## Authors
+
+* **Marzavec** - *Initial work* - [https://github.com/marzavec](https://github.com/marzavec)
+
+See also the list of [contributors](https://github.com/hack-chat/main.git/contributors) who participated in this project.
+
+## License
+
+This project is licensed under the WTFPL License - see the [http://www.wtfpl.net/txt/copying/](http://www.wtfpl.net/txt/copying/) file for details
+
+## Acknowledgments
+
+* TODO
diff --git a/client/base16/android.less b/client/base16/android.less
new file mode 100644
index 0000000..da0a06d
--- /dev/null
+++ b/client/base16/android.less
@@ -0,0 +1,24 @@
+//
+// Base16 Bright
+// Created by Fredrik Broman (http://frebro.com)
+// Based on the Android visual guidelines
+// http://developer.android.com/design/style/color.html
+//
+
+@base00: #212121;
+@base01: #333333;
+@base02: #626261;
+@base03: #858585;
+@base04: #dddddd;
+@base05: #e0e0e0;
+@base06: #f2f2f2;
+@base07: #ffffff;
+
+@base08: #e94749;
+@base09: #f18618;
+@base0A: #fbba37;
+@base0B: #99C21D;
+@base0C: #33B5E5;
+@base0D: #0099CC;
+@base0E: #9568AA;
+@base0F: #754595;
diff --git a/client/base16/atelier-dune.less b/client/base16/atelier-dune.less
new file mode 100644
index 0000000..eedd88b
--- /dev/null
+++ b/client/base16/atelier-dune.less
@@ -0,0 +1,21 @@
+//
+// Base16 Atelier Dune
+// Created by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/)
+//
+
+@base00: #20201d;
+@base01: #292824;
+@base02: #6e6b5e;
+@base03: #7d7a68;
+@base04: #999580;
+@base05: #a6a28c;
+@base06: #e8e4cf;
+@base07: #fefbec;
+@base08: #d73737;
+@base09: #b65611;
+@base0A: #cfb017;
+@base0B: #60ac39;
+@base0C: #1fad83;
+@base0D: #6684e1;
+@base0E: #b854d4;
+@base0F: #d43552;
diff --git a/client/base16/atelier-forest.less b/client/base16/atelier-forest.less
new file mode 100644
index 0000000..90bded9
--- /dev/null
+++ b/client/base16/atelier-forest.less
@@ -0,0 +1,21 @@
+//
+// Base16 Atelier Forest
+// Created by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/)
+//
+
+@base00: #1b1918;
+@base01: #2c2421;
+@base02: #68615e;
+@base03: #766e6b;
+@base04: #9c9491;
+@base05: #a8a19f;
+@base06: #e6e2e0;
+@base07: #f1efee;
+@base08: #f22c40;
+@base09: #df5320;
+@base0A: #d5911a;
+@base0B: #5ab738;
+@base0C: #00ad9c;
+@base0D: #407ee7;
+@base0E: #6666ea;
+@base0F: #c33ff3;
diff --git a/client/base16/atelier-heath.less b/client/base16/atelier-heath.less
new file mode 100644
index 0000000..5fe328c
--- /dev/null
+++ b/client/base16/atelier-heath.less
@@ -0,0 +1,21 @@
+//
+// Base16 Atelier Heath
+// Created by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/)
+//
+
+@base00: #1b181b;
+@base01: #292329;
+@base02: #695d69;
+@base03: #776977;
+@base04: #9e8f9e;
+@base05: #ab9bab;
+@base06: #d8cad8;
+@base07: #f7f3f7;
+@base08: #ca402b;
+@base09: #a65926;
+@base0A: #bb8a35;
+@base0B: #379a37;
+@base0C: #159393;
+@base0D: #516aec;
+@base0E: #7b59c0;
+@base0F: #cc33cc;
diff --git a/client/base16/atelier-lakeside.less b/client/base16/atelier-lakeside.less
new file mode 100644
index 0000000..4f6d2e2
--- /dev/null
+++ b/client/base16/atelier-lakeside.less
@@ -0,0 +1,21 @@
+//
+// Base16 Atelier Lakeside
+// Created by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/)
+//
+
+@base00: #161b1d;
+@base01: #1f292e;
+@base02: #516d7b;
+@base03: #5a7b8c;
+@base04: #7195a8;
+@base05: #7ea2b4;
+@base06: #c1e4f6;
+@base07: #ebf8ff;
+@base08: #d22d72;
+@base09: #935c25;
+@base0A: #8a8a0f;
+@base0B: #568c3b;
+@base0C: #2d8f6f;
+@base0D: #257fad;
+@base0E: #5d5db1;
+@base0F: #b72dd2;
diff --git a/client/base16/atelier-seaside.less b/client/base16/atelier-seaside.less
new file mode 100644
index 0000000..9f6d40d
--- /dev/null
+++ b/client/base16/atelier-seaside.less
@@ -0,0 +1,21 @@
+//
+// Base16 Atelier Seaside
+// Created by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/)
+//
+
+@base00: #131513;
+@base01: #242924;
+@base02: #5e6e5e;
+@base03: #687d68;
+@base04: #809980;
+@base05: #8ca68c;
+@base06: #cfe8cf;
+@base07: #f0fff0;
+@base08: #e6193c;
+@base09: #87711d;
+@base0A: #c3c322;
+@base0B: #29a329;
+@base0C: #1999b3;
+@base0D: #3d62f5;
+@base0E: #ad2bee;
+@base0F: #e619c3;
diff --git a/client/base16/bright.less b/client/base16/bright.less
new file mode 100644
index 0000000..6733ec3
--- /dev/null
+++ b/client/base16/bright.less
@@ -0,0 +1,21 @@
+//
+// Base16 Bright
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #000000;
+@base01: #303030;
+@base02: #505050;
+@base03: #b0b0b0;
+@base04: #d0d0d0;
+@base05: #e0e0e0;
+@base06: #f5f5f5;
+@base07: #ffffff;
+@base08: #fb0120;
+@base09: #fc6d24;
+@base0A: #fda331;
+@base0B: #a1c659;
+@base0C: #76c7b7;
+@base0D: #6fb3d2;
+@base0E: #d381c3;
+@base0F: #be643c;
diff --git a/client/base16/chalk.less b/client/base16/chalk.less
new file mode 100644
index 0000000..6d00446
--- /dev/null
+++ b/client/base16/chalk.less
@@ -0,0 +1,21 @@
+//
+// Base16 Chalk
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #151515;
+@base01: #202020;
+@base02: #303030;
+@base03: #505050;
+@base04: #b0b0b0;
+@base05: #d0d0d0;
+@base06: #e0e0e0;
+@base07: #f5f5f5;
+@base08: #fb9fb1;
+@base09: #eda987;
+@base0A: #ddb26f;
+@base0B: #acc267;
+@base0C: #12cfc0;
+@base0D: #6fc2ef;
+@base0E: #e1a3ee;
+@base0F: #deaf8f;
diff --git a/client/base16/default.less b/client/base16/default.less
new file mode 100644
index 0000000..29fe5fe
--- /dev/null
+++ b/client/base16/default.less
@@ -0,0 +1,21 @@
+//
+// Base16 Default
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #151515;
+@base01: #202020;
+@base02: #303030;
+@base03: #505050;
+@base04: #b0b0b0;
+@base05: #d0d0d0;
+@base06: #e0e0e0;
+@base07: #f5f5f5;
+@base08: #ac4142;
+@base09: #d28445;
+@base0A: #f4bf75;
+@base0B: #90a959;
+@base0C: #75b5aa;
+@base0D: #6a9fb5;
+@base0E: #aa759f;
+@base0F: #8f5536;
diff --git a/client/base16/eighties.less b/client/base16/eighties.less
new file mode 100644
index 0000000..436e79b
--- /dev/null
+++ b/client/base16/eighties.less
@@ -0,0 +1,21 @@
+//
+// Base16 Eighties
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #2d2d2d;
+@base01: #393939;
+@base02: #515151;
+@base03: #747369;
+@base04: #a09f93;
+@base05: #d3d0c8;
+@base06: #e8e6df;
+@base07: #f2f0ec;
+@base08: #f2777a;
+@base09: #f99157;
+@base0A: #ffcc66;
+@base0B: #99cc99;
+@base0C: #66cccc;
+@base0D: #6699cc;
+@base0E: #cc99cc;
+@base0F: #d27b53;
diff --git a/client/base16/greenscreen.less b/client/base16/greenscreen.less
new file mode 100644
index 0000000..9005fb7
--- /dev/null
+++ b/client/base16/greenscreen.less
@@ -0,0 +1,21 @@
+//
+// Base16 Greenscreen
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #001100;
+@base01: #003300;
+@base02: #005500;
+@base03: #007700;
+@base04: #009900;
+@base05: #00bb00;
+@base06: #00dd00;
+@base07: #00ff00;
+@base08: #007700;
+@base09: #009900;
+@base0A: #007700;
+@base0B: #00bb00;
+@base0C: #005500;
+@base0D: #009900;
+@base0E: #00bb00;
+@base0F: #005500;
diff --git a/client/base16/mocha.less b/client/base16/mocha.less
new file mode 100644
index 0000000..9899d20
--- /dev/null
+++ b/client/base16/mocha.less
@@ -0,0 +1,21 @@
+//
+// Base16 Mocha
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #3B3228;
+@base01: #534636;
+@base02: #645240;
+@base03: #7e705a;
+@base04: #b8afad;
+@base05: #d0c8c6;
+@base06: #e9e1dd;
+@base07: #f5eeeb;
+@base08: #cb6077;
+@base09: #d28b71;
+@base0A: #f4bc87;
+@base0B: #beb55b;
+@base0C: #7bbda4;
+@base0D: #8ab3b5;
+@base0E: #a89bb9;
+@base0F: #bb9584;
diff --git a/client/base16/monokai.less b/client/base16/monokai.less
new file mode 100644
index 0000000..1c5d242
--- /dev/null
+++ b/client/base16/monokai.less
@@ -0,0 +1,21 @@
+//
+// Base16 Monokai
+// Created by Wimer Hazenberg (http://www.monokai.nl)
+//
+
+@base00: #272822;
+@base01: #383830;
+@base02: #49483e;
+@base03: #75715e;
+@base04: #a59f85;
+@base05: #f8f8f2;
+@base06: #f5f4f1;
+@base07: #f9f8f5;
+@base08: #f92672;
+@base09: #fd971f;
+@base0A: #f4bf75;
+@base0B: #a6e22e;
+@base0C: #a1efe4;
+@base0D: #66d9ef;
+@base0E: #ae81ff;
+@base0F: #cc6633;
diff --git a/client/base16/nese.less b/client/base16/nese.less
new file mode 100644
index 0000000..6d3c431
--- /dev/null
+++ b/client/base16/nese.less
@@ -0,0 +1,26 @@
+//
+// Base16 NE.se color system
+// Created by Fredrik Broman (http://frebro.com)
+//
+// Reference on Adobe Kuler:
+// https://kuler.adobe.com/NESE-Warm-color-theme-2900819/
+// https://kuler.adobe.com/NESE-Cold-color-theme-2900847/
+//
+
+@base00: lighten(black, 1%);          // #030303
+@base01: lighten(black, 5%);          // #0c0c0c
+@base02: lighten(black, 20%);         // #262626
+@base03: lighten(black, 45%);         // #5f5f5f
+@base04: lighten(black, 65%);         // #959595
+@base05: lighten(black, 80%);         // #c1c1c1
+@base06: lighten(black, 95%);         // #efefef
+@base07: lighten(black, 99%);         // #fcfcfc
+
+@base08: #f73e30;                     // Red
+@base09: mix(@base08, @base0A, 50%);  // Orange   = #f97c37
+@base0A: #faba3d;                     // Yellow
+@base0B: #1ab857;                     // Green
+@base0C: mix(@base0B, @base0D, 50%);  // Cyan     = #29a188
+@base0D: #388bb8;                     // Blue
+@base0E: mix(@base0D, @base0F, 50%);  // Purple   = #9c73a7
+@base0F: #ff5a96;                     // Pink
diff --git a/client/base16/ocean.less b/client/base16/ocean.less
new file mode 100644
index 0000000..b91d1a8
--- /dev/null
+++ b/client/base16/ocean.less
@@ -0,0 +1,21 @@
+//
+// Base16 Ocean
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #2b303b;
+@base01: #343d46;
+@base02: #4f5b66;
+@base03: #65737e;
+@base04: #a7adba;
+@base05: #c0c5ce;
+@base06: #dfe1e8;
+@base07: #eff1f5;
+@base08: #bf616a;
+@base09: #d08770;
+@base0A: #ebcb8b;
+@base0B: #a3be8c;
+@base0C: #96b5b4;
+@base0D: #8fa1b3;
+@base0E: #b48ead;
+@base0F: #ab7967;
diff --git a/client/base16/pop.less b/client/base16/pop.less
new file mode 100644
index 0000000..933f585
--- /dev/null
+++ b/client/base16/pop.less
@@ -0,0 +1,21 @@
+//
+// Base16 Pop
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #000000;
+@base01: #202020;
+@base02: #303030;
+@base03: #505050;
+@base04: #b0b0b0;
+@base05: #d0d0d0;
+@base06: #e0e0e0;
+@base07: #ffffff;
+@base08: #eb008a;
+@base09: #f29333;
+@base0A: #f8ca12;
+@base0B: #37b349;
+@base0C: #00aabb;
+@base0D: #0e5a94;
+@base0E: #b31e8d;
+@base0F: #7a2d00;
diff --git a/client/base16/railscasts.less b/client/base16/railscasts.less
new file mode 100644
index 0000000..8a27403
--- /dev/null
+++ b/client/base16/railscasts.less
@@ -0,0 +1,21 @@
+//
+// Base16 Railscasts
+// Created by Ryan Bates (http://railscasts.com)
+//
+
+@base00: #2b2b2b;
+@base01: #272935;
+@base02: #3a4055;
+@base03: #5a647e;
+@base04: #d4cfc9;
+@base05: #e6e1dc;
+@base06: #f4f1ed;
+@base07: #f9f7f3;
+@base08: #da4939;
+@base09: #cc7833;
+@base0A: #ffc66d;
+@base0B: #a5c261;
+@base0C: #519f50;
+@base0D: #6d9cbe;
+@base0E: #b6b3eb;
+@base0F: #bc9458;
diff --git a/client/base16/solarized.less b/client/base16/solarized.less
new file mode 100644
index 0000000..a885f8e
--- /dev/null
+++ b/client/base16/solarized.less
@@ -0,0 +1,21 @@
+//
+// Base16 Solarized
+// Created by Ethan Schoonover (http://ethanschoonover.com/solarized)
+//
+
+@base00: #002b36;
+@base01: #073642;
+@base02: #586e75;
+@base03: #657b83;
+@base04: #839496;
+@base05: #93a1a1;
+@base06: #eee8d5;
+@base07: #fdf6e3;
+@base08: #dc322f;
+@base09: #cb4b16;
+@base0A: #b58900;
+@base0B: #859900;
+@base0C: #2aa198;
+@base0D: #268bd2;
+@base0E: #6c71c4;
+@base0F: #d33682;
diff --git a/client/base16/tomorrow.less b/client/base16/tomorrow.less
new file mode 100644
index 0000000..fb5b075
--- /dev/null
+++ b/client/base16/tomorrow.less
@@ -0,0 +1,21 @@
+//
+// Base16 Tomorrow
+// Created by Chris Kempson (http://chriskempson.com)
+//
+
+@base00: #1d1f21;
+@base01: #282a2e;
+@base02: #373b41;
+@base03: #969896;
+@base04: #b4b7b4;
+@base05: #c5c8c6;
+@base06: #e0e0e0;
+@base07: #ffffff;
+@base08: #cc6666;
+@base09: #de935f;
+@base0A: #f0c674;
+@base0B: #b5bd68;
+@base0C: #8abeb7;
+@base0D: #81a2be;
+@base0E: #b294bb;
+@base0F: #a3685a;
diff --git a/client/client.js b/client/client.js
new file mode 100644
index 0000000..e8c3b79
--- /dev/null
+++ b/client/client.js
@@ -0,0 +1,534 @@
+var frontpage = [
+	"                            _           _         _       _   ",
+	"                           | |_ ___ ___| |_   ___| |_ ___| |_ ",
+	"                           |   |_ ||  _| '_| |  _|   |_ ||  _|",
+	"                           |_|_|__/|___|_,_|.|___|_|_|__/|_|  ",
+	"",
+	"",
+	"Welcome to hack.chat, a minimal, distraction-free chat application.",
+	"Channels are created and joined by going to https://hack.chat/?your-channel. There are no channel lists, so a secret channel name can be used for private discussions.",
+	"",
+	"Here are some pre-made channels you can join:",
+	"?lounge ?meta",
+	"?math ?physics ?chemistry",
+	"?technology ?programming",
+	"?games ?banana",
+	"And here's a random one generated just for you: ?" + Math.random().toString(36).substr(2, 8),
+	"",
+	"Formatting:",
+	"Whitespace is preserved, so source code can be pasted verbatim.",
+	"Surround LaTeX with a dollar sign for inline style $\\zeta(2) = \\pi^2/6$, and two dollars for display. $$\\int_0^1 \\int_0^1 \\frac{1}{1-xy} dx dy = \\frac{\\pi^2}{6}$$",
+	"",
+	"GitHub: https://github.com/AndrewBelt/hack.chat",
+	"Android apps: https://goo.gl/UkbKYy https://goo.gl/qasdSu https://goo.gl/fGQFQN",
+	"",
+	"Server and web client released under the MIT open source license.",
+	"No message history is retained on the hack.chat server.",
+	"",
+	"[03/03/2018] Please note that the server is currently undergoing changes, expect random downtime or disconnections!",
+	"[03/03/2018] Hack.chat is now under new management by the core community; @raf924 @bacon @wwandrew @Rut @_0x17 @M4GNV5 @MinusGix @nanotech",
+].join("\n")
+
+function $(query) {return document.querySelector(query)}
+
+function localStorageGet(key) {
+	try {
+		return window.localStorage[key]
+	}
+	catch(e) {}
+}
+
+function localStorageSet(key, val) {
+	try {
+		window.localStorage[key] = val
+	}
+	catch(e) {}
+}
+
+
+var ws
+var myNick = localStorageGet('my-nick')
+var myChannel = window.location.search.replace(/^\?/, '')
+var lastSent = [""]
+var lastSentPos = 0
+
+
+// Ping server every 50 seconds to retain WebSocket connection
+window.setInterval(function() {
+	send({cmd: 'ping'})
+}, 50000)
+
+
+function join(channel) {
+
+		ws = new WebSocket('ws://127.0.0.1:6060')
+
+	var wasConnected = false
+
+	ws.onopen = function() {
+		if (!wasConnected) {
+			if (location.hash) {
+				myNick = location.hash.substr(1)
+			}
+			else {
+				myNick = prompt('Nickname:', myNick)
+			}
+		}
+		if (myNick) {
+			localStorageSet('my-nick', myNick)
+			send({cmd: 'join', channel: channel, nick: myNick})
+		}
+		wasConnected = true
+	}
+
+	ws.onclose = function() {
+		if (wasConnected) {
+			pushMessage({nick: '!', text: "Server disconnected. Attempting to reconnect..."})
+		}
+		window.setTimeout(function() {
+			join(channel)
+		}, 2000)
+	}
+
+	ws.onmessage = function(message) {
+		var args = JSON.parse(message.data)
+		var cmd = args.cmd
+		var command = COMMANDS[cmd]
+		command.call(null, args)
+	}
+}
+
+
+var COMMANDS = {
+	chat: function(args) {
+		if (ignoredUsers.indexOf(args.nick) >= 0) {
+			return
+		}
+		pushMessage(args)
+	},
+	info: function(args) {
+		args.nick = '*'
+		pushMessage(args)
+	},
+	warn: function(args) {
+		args.nick = '!'
+		pushMessage(args)
+	},
+	onlineSet: function(args) {
+		var nicks = args.nicks
+		usersClear()
+		nicks.forEach(function(nick) {
+			userAdd(nick)
+		})
+		pushMessage({nick: '*', text: "Users online: " + nicks.join(", ")})
+	},
+	onlineAdd: function(args) {
+		var nick = args.nick
+		userAdd(nick)
+		if ($('#joined-left').checked) {
+			pushMessage({nick: '*', text: nick + " joined"})
+		}
+	},
+	onlineRemove: function(args) {
+		var nick = args.nick
+		userRemove(nick)
+		if ($('#joined-left').checked) {
+			pushMessage({nick: '*', text: nick + " left"})
+		}
+	},
+}
+
+
+function pushMessage(args) {
+	// Message container
+	var messageEl = document.createElement('div')
+	messageEl.classList.add('message')
+
+	if (args.nick == myNick) {
+		messageEl.classList.add('me')
+	}
+	else if (args.nick == '!') {
+		messageEl.classList.add('warn')
+	}
+	else if (args.nick == '*') {
+		messageEl.classList.add('info')
+	}
+	else if (args.admin) {
+		messageEl.classList.add('admin')
+	}
+	else if (args.mod) {
+		messageEl.classList.add('mod')
+	}
+
+	// Nickname
+	var nickSpanEl = document.createElement('span')
+	nickSpanEl.classList.add('nick')
+	messageEl.appendChild(nickSpanEl)
+
+	if (args.trip) {
+		var tripEl = document.createElement('span')
+		tripEl.textContent = args.trip + " "
+		tripEl.classList.add('trip')
+		nickSpanEl.appendChild(tripEl)
+	}
+
+	if (args.nick) {
+		var nickLinkEl = document.createElement('a')
+		nickLinkEl.textContent = args.nick
+		nickLinkEl.onclick = function() {
+			insertAtCursor("@" + args.nick + " ")
+			$('#chatinput').focus()
+		}
+		var date = new Date(args.time || Date.now())
+		nickLinkEl.title = date.toLocaleString()
+		nickSpanEl.appendChild(nickLinkEl)
+	}
+
+	// Text
+	var textEl = document.createElement('pre')
+	textEl.classList.add('text')
+
+	textEl.textContent = args.text || ''
+	textEl.innerHTML = textEl.innerHTML.replace(/(\?|https?:\/\/)\S+?(?=[,.!?:)]?\s|$)/g, parseLinks)
+
+	if ($('#parse-latex').checked) {
+		// Temporary hotfix for \rule spamming, see https://github.com/Khan/KaTeX/issues/109
+		textEl.innerHTML = textEl.innerHTML.replace(/\\rule|\\\\\s*\[.*?\]/g, '')
+		try {
+			renderMathInElement(textEl, {delimiters: [
+				{left: "$$", right: "$$", display: true},
+				{left: "$", right: "$", display: false},
+			]})
+		}
+		catch (e) {
+			console.warn(e)
+		}
+	}
+
+	messageEl.appendChild(textEl)
+
+	// Scroll to bottom
+	var atBottom = isAtBottom()
+	$('#messages').appendChild(messageEl)
+	if (atBottom) {
+		window.scrollTo(0, document.body.scrollHeight)
+	}
+
+	unread += 1
+	updateTitle()
+}
+
+
+function insertAtCursor(text) {
+	var input = $('#chatinput')
+	var start = input.selectionStart || 0
+	var before = input.value.substr(0, start)
+	var after = input.value.substr(start)
+	before += text
+	input.value = before + after
+	input.selectionStart = input.selectionEnd = before.length
+	updateInputSize()
+}
+
+
+function send(data) {
+	if (ws && ws.readyState == ws.OPEN) {
+		ws.send(JSON.stringify(data))
+	}
+}
+
+
+function parseLinks(g0) {
+	var a = document.createElement('a')
+	a.innerHTML = g0
+	var url = a.textContent
+	a.href = url
+	a.target = '_blank'
+	return a.outerHTML
+}
+
+
+var windowActive = true
+var unread = 0
+
+window.onfocus = function() {
+	windowActive = true
+	updateTitle()
+}
+
+window.onblur = function() {
+	windowActive = false
+}
+
+window.onscroll = function() {
+	if (isAtBottom()) {
+		updateTitle()
+	}
+}
+
+function isAtBottom() {
+	return (window.innerHeight + window.scrollY) >= (document.body.scrollHeight - 1)
+}
+
+function updateTitle() {
+	if (windowActive && isAtBottom()) {
+		unread = 0
+	}
+
+	var title
+	if (myChannel) {
+		title = "?" + myChannel
+	}
+	else {
+		title = "hack.chat"
+	}
+	if (unread > 0) {
+		title = '(' + unread + ') ' + title
+	}
+	document.title = title
+}
+
+/* footer */
+
+$('#footer').onclick = function() {
+	$('#chatinput').focus()
+}
+
+$('#chatinput').onkeydown = function(e) {
+	if (e.keyCode == 13 /* ENTER */ && !e.shiftKey) {
+		e.preventDefault()
+		// Submit message
+		if (e.target.value != '') {
+			var text = e.target.value
+			e.target.value = ''
+			send({cmd: 'chat', text: text})
+			lastSent[0] = text
+			lastSent.unshift("")
+			lastSentPos = 0
+			updateInputSize()
+		}
+	}
+	else if (e.keyCode == 38 /* UP */) {
+		// Restore previous sent messages
+		if (e.target.selectionStart === 0 && lastSentPos < lastSent.length - 1) {
+			e.preventDefault()
+			if (lastSentPos == 0) {
+				lastSent[0] = e.target.value
+			}
+			lastSentPos += 1
+			e.target.value = lastSent[lastSentPos]
+			e.target.selectionStart = e.target.selectionEnd = e.target.value.length
+			updateInputSize()
+		}
+	}
+	else if (e.keyCode == 40 /* DOWN */) {
+		if (e.target.selectionStart === e.target.value.length && lastSentPos > 0) {
+			e.preventDefault()
+			lastSentPos -= 1
+			e.target.value = lastSent[lastSentPos]
+			e.target.selectionStart = e.target.selectionEnd = 0
+			updateInputSize()
+		}
+	}
+	else if (e.keyCode == 27 /* ESC */) {
+		e.preventDefault()
+		// Clear input field
+		e.target.value = ""
+		lastSentPos = 0
+		lastSent[lastSentPos] = ""
+		updateInputSize()
+	}
+	else if (e.keyCode == 9 /* TAB */) {
+		// Tab complete nicknames starting with @
+		e.preventDefault()
+		var pos = e.target.selectionStart || 0
+		var text = e.target.value
+		var index = text.lastIndexOf('@', pos)
+		if (index >= 0) {
+			var stub = text.substring(index + 1, pos).toLowerCase()
+			// Search for nick beginning with stub
+			var nicks = onlineUsers.filter(function(nick) {
+				return nick.toLowerCase().indexOf(stub) == 0
+			})
+			if (nicks.length == 1) {
+				insertAtCursor(nicks[0].substr(stub.length) + " ")
+			}
+		}
+	}
+}
+
+
+function updateInputSize() {
+	var atBottom = isAtBottom()
+
+	var input = $('#chatinput')
+	input.style.height = 0
+	input.style.height = input.scrollHeight + 'px'
+	document.body.style.marginBottom = $('#footer').offsetHeight + 'px'
+
+	if (atBottom) {
+		window.scrollTo(0, document.body.scrollHeight)
+	}
+}
+
+$('#chatinput').oninput = function() {
+	updateInputSize()
+}
+
+updateInputSize()
+
+
+/* sidebar */
+
+$('#sidebar').onmouseenter = $('#sidebar').ontouchstart = function(e) {
+	$('#sidebar-content').classList.remove('hidden')
+	e.stopPropagation()
+}
+
+$('#sidebar').onmouseleave = document.ontouchstart = function() {
+	if (!$('#pin-sidebar').checked) {
+		$('#sidebar-content').classList.add('hidden')
+	}
+}
+
+$('#clear-messages').onclick = function() {
+	// Delete children elements
+	var messages = $('#messages')
+	while (messages.firstChild) {
+		messages.removeChild(messages.firstChild)
+	}
+}
+
+// Restore settings from localStorage
+
+if (localStorageGet('pin-sidebar') == 'true') {
+	$('#pin-sidebar').checked = true
+	$('#sidebar-content').classList.remove('hidden')
+}
+if (localStorageGet('joined-left') == 'false') {
+	$('#joined-left').checked = false
+}
+if (localStorageGet('parse-latex') == 'false') {
+	$('#parse-latex').checked = false
+}
+
+$('#pin-sidebar').onchange = function(e) {
+	localStorageSet('pin-sidebar', !!e.target.checked)
+}
+$('#joined-left').onchange = function(e) {
+	localStorageSet('joined-left', !!e.target.checked)
+}
+$('#parse-latex').onchange = function(e) {
+	localStorageSet('parse-latex', !!e.target.checked)
+}
+
+// User list
+
+var onlineUsers = []
+var ignoredUsers = []
+
+function userAdd(nick) {
+	var user = document.createElement('a')
+	user.textContent = nick
+	user.onclick = function(e) {
+		userInvite(nick)
+	}
+	var userLi = document.createElement('li')
+	userLi.appendChild(user)
+	$('#users').appendChild(userLi)
+	onlineUsers.push(nick)
+}
+
+function userRemove(nick) {
+	var users = $('#users')
+	var children = users.children
+	for (var i = 0; i < children.length; i++) {
+		var user = children[i]
+		if (user.textContent == nick) {
+			users.removeChild(user)
+		}
+	}
+	var index = onlineUsers.indexOf(nick)
+	if (index >= 0) {
+		onlineUsers.splice(index, 1)
+	}
+}
+
+function usersClear() {
+	var users = $('#users')
+	while (users.firstChild) {
+		users.removeChild(users.firstChild)
+	}
+	onlineUsers.length = 0
+}
+
+function userInvite(nick) {
+	send({cmd: 'invite', nick: nick})
+}
+
+function userIgnore(nick) {
+	ignoredUsers.push(nick)
+}
+
+/* color scheme switcher */
+
+var schemes = [
+	'android',
+	'atelier-dune',
+	'atelier-forest',
+	'atelier-heath',
+	'atelier-lakeside',
+	'atelier-seaside',
+	'bright',
+	'chalk',
+	'default',
+	'eighties',
+	'greenscreen',
+	'mocha',
+	'monokai',
+	'nese',
+	'ocean',
+	'pop',
+	'railscasts',
+	'solarized',
+	'tomorrow',
+]
+
+var currentScheme = 'atelier-dune'
+
+function setScheme(scheme) {
+	currentScheme = scheme
+	$('#scheme-link').href = "/schemes/" + scheme + ".css"
+	localStorageSet('scheme', scheme)
+}
+
+// Add scheme options to dropdown selector
+schemes.forEach(function(scheme) {
+	var option = document.createElement('option')
+	option.textContent = scheme
+	option.value = scheme
+	$('#scheme-selector').appendChild(option)
+})
+
+$('#scheme-selector').onchange = function(e) {
+	setScheme(e.target.value)
+}
+
+// Load sidebar configaration values from local storage if available
+if (localStorageGet('scheme')) {
+	setScheme(localStorageGet('scheme'))
+}
+
+$('#scheme-selector').value = currentScheme
+
+
+/* main */
+
+if (myChannel == '') {
+	pushMessage({text: frontpage})
+	$('#footer').classList.add('hidden')
+	$('#sidebar').classList.add('hidden')
+}
+else {
+	join(myChannel)
+}
diff --git a/client/index.html b/client/index.html
new file mode 100644
index 0000000..3b56bd5
--- /dev/null
+++ b/client/index.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+
+
+
+
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
+    <title>hack.chat</title>
+
+    <meta name="application-name" content="Hack.Chat">
+    <meta name="author" content="Marzavec, admin@marzavec.com">
+    <meta name="description" content="A minimal, accountless, anonymous, distraction-free chat application">
+    <meta name="keywords" content="minimal, accountless, anonymous, distraction-free, chat">
+    <meta name="robots" content="index, follow">
+    <meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
+    <link rel="apple-touch-icon" sizes="57x57" href="/favicons/apple-touch-icon-57x57.png">
+    <link rel="apple-touch-icon" sizes="114x114" href="/favicons/apple-touch-icon-114x114.png">
+    <link rel="apple-touch-icon" sizes="72x72" href="/favicons/apple-touch-icon-72x72.png">
+    <link rel="apple-touch-icon" sizes="144x144" href="/favicons/apple-touch-icon-144x144.png">
+    <link rel="apple-touch-icon" sizes="60x60" href="/favicons/apple-touch-icon-60x60.png">
+    <link rel="apple-touch-icon" sizes="120x120" href="/favicons/apple-touch-icon-120x120.png">
+    <link rel="apple-touch-icon" sizes="76x76" href="/favicons/apple-touch-icon-76x76.png">
+    <link rel="apple-touch-icon" sizes="152x152" href="/favicons/apple-touch-icon-152x152.png">
+    <meta name="apple-mobile-web-app-title" content="Rubix">
+    <link rel="icon" type="image/png" href="/favicons/favicon-196x196.png" sizes="196x196">
+    <link rel="icon" type="image/png" href="/favicons/favicon-160x160.png" sizes="160x160">
+    <link rel="icon" type="image/png" href="/favicons/favicon-96x96.png" sizes="96x96">
+    <link rel="icon" type="image/png" href="/favicons/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="/favicons/favicon-32x32.png" sizes="32x32">
+    <meta name="msapplication-TileColor" content="#E76049">
+    <meta name="msapplication-TileImage" content="/favicons/mstile-144x144.png">
+
+    <link rel="stylesheet" href="style.css">
+    <link rel="stylesheet" href="katex/katex.min.css">
+    <link id="scheme-link" rel="stylesheet" href="schemes/atelier-dune.css">
+    <script src="katex/katex.min.js"></script>
+    <script src="katex/contrib/auto-render.min.js"></script>
+</head>
+
+<body>
+    <article class="container">
+        <div id="messages" class="messages"></div>
+    </article>
+    <footer id="footer">
+        <div class="container">
+            <form id="chatform" class="messages"><textarea id="chatinput" type="text" autocomplete="off" autofocus></textarea></form>
+        </div>
+    </footer>
+    <nav id="sidebar">
+        <div id="sidebar-content" class="hidden">
+            <p><input id="pin-sidebar" type="checkbox"><label for="pin-sidebar">Pin sidebar</label></p>
+            <h4>Settings</h4>
+            <p><input id="joined-left" type="checkbox" checked><label for="joined-left">Join/left notify</label></p>
+            <p><input id="parse-latex" type="checkbox" checked><label for="parse-latex">Parse LaTeX</label></p>
+            <p><button id="clear-messages">Clear messages</button></p>
+            <h4>Color scheme</h4><select id="scheme-selector"></select>
+            <h4>Users online</h4>
+            <p>(Click user to invite)</p>
+            <ul id="users"></ul>
+        </div>
+    </nav>
+    <script src="client.js"></script>
+</body>
+
+</html>
diff --git a/client/katex/.gitkeep b/client/katex/.gitkeep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/client/katex/.gitkeep
diff --git a/client/katex/auto-render.js b/client/katex/auto-render.js
new file mode 100644
index 0000000..3943dc0
--- /dev/null
+++ b/client/katex/auto-render.js
@@ -0,0 +1,219 @@
+(function(e){if("function"==typeof bootstrap)bootstrap("rendermathinelement",e);else if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeRenderMathInElement=e}else"undefined"!=typeof window?window.renderMathInElement=e():global.renderMathInElement=e()})(function(){var define,ses,bootstrap,module,exports;
+return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+/* global katex */
+
+var splitAtDelimiters = require("./splitAtDelimiters");
+
+var splitWithDelimiters = function(text, delimiters) {
+    var data = [{type: "text", data: text}];
+    for (var i = 0; i < delimiters.length; i++) {
+        var delimiter = delimiters[i];
+        data = splitAtDelimiters(
+            data, delimiter.left, delimiter.right,
+            delimiter.display || false);
+    }
+    return data;
+};
+
+var renderMathInText = function(text, delimiters) {
+    var data = splitWithDelimiters(text, delimiters);
+
+    var fragment = document.createDocumentFragment();
+
+    for (var i = 0; i < data.length; i++) {
+        if (data[i].type === "text") {
+            fragment.appendChild(document.createTextNode(data[i].data));
+        } else {
+            var span = document.createElement("span");
+            var math = data[i].data;
+            try {
+                katex.render(math, span, {
+                    displayMode: data[i].display
+                });
+            } catch (e) {
+                if (!(e instanceof katex.ParseError)) {
+                    throw e;
+                }
+                console.error(
+                    "KaTeX auto-render: Failed to parse `" + data[i].data +
+                    "` with ",
+                    e
+                );
+                fragment.appendChild(document.createTextNode(data[i].rawData));
+                continue;
+            }
+            fragment.appendChild(span);
+        }
+    }
+
+    return fragment;
+};
+
+var renderElem = function(elem, delimiters, ignoredTags) {
+    for (var i = 0; i < elem.childNodes.length; i++) {
+        var childNode = elem.childNodes[i];
+        if (childNode.nodeType === 3) {
+            // Text node
+            var frag = renderMathInText(childNode.textContent, delimiters);
+            i += frag.childNodes.length - 1;
+            elem.replaceChild(frag, childNode);
+        } else if (childNode.nodeType === 1) {
+            // Element node
+            var shouldRender = ignoredTags.indexOf(
+                childNode.nodeName.toLowerCase()) === -1;
+
+            if (shouldRender) {
+                renderElem(childNode, delimiters, ignoredTags);
+            }
+        }
+        // Otherwise, it's something else, and ignore it.
+    }
+};
+
+var defaultOptions = {
+    delimiters: [
+        {left: "$$", right: "$$", display: true},
+        {left: "\\[", right: "\\]", display: true},
+        {left: "\\(", right: "\\)", display: false}
+        // LaTeX uses this, but it ruins the display of normal `$` in text:
+        // {left: "$", right: "$", display: false}
+    ],
+
+    ignoredTags: [
+        "script", "noscript", "style", "textarea", "pre", "code"
+    ]
+};
+
+var extend = function(obj) {
+    // Adapted from underscore.js' `_.extend`. See LICENSE.txt for license.
+    var source, prop;
+    for (var i = 1, length = arguments.length; i < length; i++) {
+        source = arguments[i];
+        for (prop in source) {
+            if (Object.prototype.hasOwnProperty.call(source, prop)) {
+                obj[prop] = source[prop];
+            }
+        }
+    }
+    return obj;
+};
+
+var renderMathInElement = function(elem, options) {
+    if (!elem) {
+        throw new Error("No element provided to render");
+    }
+
+    options = extend({}, defaultOptions, options);
+
+    renderElem(elem, options.delimiters, options.ignoredTags);
+};
+
+module.exports = renderMathInElement;
+
+},{"./splitAtDelimiters":2}],2:[function(require,module,exports){
+var findEndOfMath = function(delimiter, text, startIndex) {
+    // Adapted from
+    // https://github.com/Khan/perseus/blob/master/src/perseus-markdown.jsx
+    var index = startIndex;
+    var braceLevel = 0;
+
+    var delimLength = delimiter.length;
+
+    while (index < text.length) {
+        var character = text[index];
+
+        if (braceLevel <= 0 &&
+            text.slice(index, index + delimLength) === delimiter) {
+            return index;
+        } else if (character === "\\") {
+            index++;
+        } else if (character === "{") {
+            braceLevel++;
+        } else if (character === "}") {
+            braceLevel--;
+        }
+
+        index++;
+    }
+
+    return -1;
+};
+
+var splitAtDelimiters = function(startData, leftDelim, rightDelim, display) {
+    var finalData = [];
+
+    for (var i = 0; i < startData.length; i++) {
+        if (startData[i].type === "text") {
+            var text = startData[i].data;
+
+            var lookingForLeft = true;
+            var currIndex = 0;
+            var nextIndex;
+
+            nextIndex = text.indexOf(leftDelim);
+            if (nextIndex !== -1) {
+                currIndex = nextIndex;
+                finalData.push({
+                    type: "text",
+                    data: text.slice(0, currIndex)
+                });
+                lookingForLeft = false;
+            }
+
+            while (true) {
+                if (lookingForLeft) {
+                    nextIndex = text.indexOf(leftDelim, currIndex);
+                    if (nextIndex === -1) {
+                        break;
+                    }
+
+                    finalData.push({
+                        type: "text",
+                        data: text.slice(currIndex, nextIndex)
+                    });
+
+                    currIndex = nextIndex;
+                } else {
+                    nextIndex = findEndOfMath(
+                        rightDelim,
+                        text,
+                        currIndex + leftDelim.length);
+                    if (nextIndex === -1) {
+                        break;
+                    }
+
+                    finalData.push({
+                        type: "math",
+                        data: text.slice(
+                            currIndex + leftDelim.length,
+                            nextIndex),
+                        rawData: text.slice(
+                            currIndex,
+                            nextIndex + rightDelim.length),
+                        display: display
+                    });
+
+                    currIndex = nextIndex + rightDelim.length;
+                }
+
+                lookingForLeft = !lookingForLeft;
+            }
+
+            finalData.push({
+                type: "text",
+                data: text.slice(currIndex)
+            });
+        } else {
+            finalData.push(startData[i]);
+        }
+    }
+
+    return finalData;
+};
+
+module.exports = splitAtDelimiters;
+
+},{}]},{},[1])
+(1)
+});
+;
\ No newline at end of file
diff --git a/client/katex/contrib/auto-render.min.js b/client/katex/contrib/auto-render.min.js
new file mode 100644
index 0000000..5eab253
--- /dev/null
+++ b/client/katex/contrib/auto-render.min.js
@@ -0,0 +1 @@
+(function(e){if("function"==typeof bootstrap)bootstrap("rendermathinelement",e);else if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeRenderMathInElement=e}else"undefined"!=typeof window?window.renderMathInElement=e():global.renderMathInElement=e()})(function(){var e,t,r,n,a;return function i(e,t,r){function n(o,l){if(!t[o]){if(!e[o]){var f=typeof require=="function"&&require;if(!l&&f)return f(o,!0);if(a)return a(o,!0);throw new Error("Cannot find module '"+o+"'")}var s=t[o]={exports:{}};e[o][0].call(s.exports,function(t){var r=e[o][1][t];return n(r?r:t)},s,s.exports,i,e,t,r)}return t[o].exports}var a=typeof require=="function"&&require;for(var o=0;o<r.length;o++)n(r[o]);return n}({1:[function(e,t,r){var n=e("./splitAtDelimiters");var a=function(e,t){var r=[{type:"text",data:e}];for(var a=0;a<t.length;a++){var i=t[a];r=n(r,i.left,i.right,i.display||false)}return r};var i=function(e,t){var r=a(e,t);var n=document.createDocumentFragment();for(var i=0;i<r.length;i++){if(r[i].type==="text"){n.appendChild(document.createTextNode(r[i].data))}else{var o=document.createElement("span");var l=r[i].data;try{katex.render(l,o,{displayMode:r[i].display})}catch(f){if(!(f instanceof katex.ParseError)){throw f}console.error("KaTeX auto-render: Failed to parse `"+r[i].data+"` with ",f);n.appendChild(document.createTextNode(r[i].rawData));continue}n.appendChild(o)}}return n};var o=function(e,t,r){for(var n=0;n<e.childNodes.length;n++){var a=e.childNodes[n];if(a.nodeType===3){var l=i(a.textContent,t);n+=l.childNodes.length-1;e.replaceChild(l,a)}else if(a.nodeType===1){var f=r.indexOf(a.nodeName.toLowerCase())===-1;if(f){o(a,t,r)}}}};var l={delimiters:[{left:"$$",right:"$$",display:true},{left:"\\[",right:"\\]",display:true},{left:"\\(",right:"\\)",display:false}],ignoredTags:["script","noscript","style","textarea","pre","code"]};var f=function(e){var t,r;for(var n=1,a=arguments.length;n<a;n++){t=arguments[n];for(r in t){if(Object.prototype.hasOwnProperty.call(t,r)){e[r]=t[r]}}}return e};var s=function(e,t){if(!e){throw new Error("No element provided to render")}t=f({},l,t);o(e,t.delimiters,t.ignoredTags)};t.exports=s},{"./splitAtDelimiters":2}],2:[function(e,t,r){var n=function(e,t,r){var n=r;var a=0;var i=e.length;while(n<t.length){var o=t[n];if(a<=0&&t.slice(n,n+i)===e){return n}else if(o==="\\"){n++}else if(o==="{"){a++}else if(o==="}"){a--}n++}return-1};var a=function(e,t,r,a){var i=[];for(var o=0;o<e.length;o++){if(e[o].type==="text"){var l=e[o].data;var f=true;var s=0;var d;d=l.indexOf(t);if(d!==-1){s=d;i.push({type:"text",data:l.slice(0,s)});f=false}while(true){if(f){d=l.indexOf(t,s);if(d===-1){break}i.push({type:"text",data:l.slice(s,d)});s=d}else{d=n(r,l,s+t.length);if(d===-1){break}i.push({type:"math",data:l.slice(s+t.length,d),rawData:l.slice(s,d+r.length),display:a});s=d+r.length}f=!f}i.push({type:"text",data:l.slice(s)})}else{i.push(e[o])}}return i};t.exports=a},{}]},{},[1])(1)});
diff --git a/client/katex/fonts/KaTeX_AMS-Regular.eot b/client/katex/fonts/KaTeX_AMS-Regular.eot
new file mode 100644
index 0000000..842e453
--- /dev/null
+++ b/client/katex/fonts/KaTeX_AMS-Regular.eot
diff --git a/client/katex/fonts/KaTeX_AMS-Regular.ttf b/client/katex/fonts/KaTeX_AMS-Regular.ttf
new file mode 100644
index 0000000..8da3d44
--- /dev/null
+++ b/client/katex/fonts/KaTeX_AMS-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_AMS-Regular.woff b/client/katex/fonts/KaTeX_AMS-Regular.woff
new file mode 100644
index 0000000..f8934ec
--- /dev/null
+++ b/client/katex/fonts/KaTeX_AMS-Regular.woff
diff --git a/client/katex/fonts/KaTeX_AMS-Regular.woff2 b/client/katex/fonts/KaTeX_AMS-Regular.woff2
new file mode 100644
index 0000000..64bdd82
--- /dev/null
+++ b/client/katex/fonts/KaTeX_AMS-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Caligraphic-Bold.eot b/client/katex/fonts/KaTeX_Caligraphic-Bold.eot
new file mode 100644
index 0000000..6c441ae
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Caligraphic-Bold.eot
diff --git a/client/katex/fonts/KaTeX_Caligraphic-Bold.ttf b/client/katex/fonts/KaTeX_Caligraphic-Bold.ttf
new file mode 100644
index 0000000..1580d64
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Caligraphic-Bold.ttf
diff --git a/client/katex/fonts/KaTeX_Caligraphic-Bold.woff b/client/katex/fonts/KaTeX_Caligraphic-Bold.woff
new file mode 100644
index 0000000..a2a7399
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Caligraphic-Bold.woff
diff --git a/client/katex/fonts/KaTeX_Caligraphic-Bold.woff2 b/client/katex/fonts/KaTeX_Caligraphic-Bold.woff2
new file mode 100644
index 0000000..0107950
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Caligraphic-Bold.woff2
diff --git a/client/katex/fonts/KaTeX_Caligraphic-Regular.eot b/client/katex/fonts/KaTeX_Caligraphic-Regular.eot
new file mode 100644
index 0000000..5287c0d
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Caligraphic-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Caligraphic-Regular.ttf b/client/katex/fonts/KaTeX_Caligraphic-Regular.ttf
new file mode 100644
index 0000000..ab23091
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Caligraphic-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Caligraphic-Regular.woff b/client/katex/fonts/KaTeX_Caligraphic-Regular.woff
new file mode 100644
index 0000000..6188e55
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Caligraphic-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Caligraphic-Regular.woff2 b/client/katex/fonts/KaTeX_Caligraphic-Regular.woff2
new file mode 100644
index 0000000..0e692ea
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Caligraphic-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Fraktur-Bold.eot b/client/katex/fonts/KaTeX_Fraktur-Bold.eot
new file mode 100644
index 0000000..cf4b368
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Fraktur-Bold.eot
diff --git a/client/katex/fonts/KaTeX_Fraktur-Bold.ttf b/client/katex/fonts/KaTeX_Fraktur-Bold.ttf
new file mode 100644
index 0000000..f66a74d
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Fraktur-Bold.ttf
diff --git a/client/katex/fonts/KaTeX_Fraktur-Bold.woff b/client/katex/fonts/KaTeX_Fraktur-Bold.woff
new file mode 100644
index 0000000..3804f1f
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Fraktur-Bold.woff
diff --git a/client/katex/fonts/KaTeX_Fraktur-Bold.woff2 b/client/katex/fonts/KaTeX_Fraktur-Bold.woff2
new file mode 100644
index 0000000..b4caf09
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Fraktur-Bold.woff2
diff --git a/client/katex/fonts/KaTeX_Fraktur-Regular.eot b/client/katex/fonts/KaTeX_Fraktur-Regular.eot
new file mode 100644
index 0000000..cbe084e
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Fraktur-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Fraktur-Regular.ttf b/client/katex/fonts/KaTeX_Fraktur-Regular.ttf
new file mode 100644
index 0000000..c4a760b
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Fraktur-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Fraktur-Regular.woff b/client/katex/fonts/KaTeX_Fraktur-Regular.woff
new file mode 100644
index 0000000..c5ce1cd
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Fraktur-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Fraktur-Regular.woff2 b/client/katex/fonts/KaTeX_Fraktur-Regular.woff2
new file mode 100644
index 0000000..1dd3794
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Fraktur-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Main-Bold.eot b/client/katex/fonts/KaTeX_Main-Bold.eot
new file mode 100644
index 0000000..0cd6d11
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Bold.eot
diff --git a/client/katex/fonts/KaTeX_Main-Bold.ttf b/client/katex/fonts/KaTeX_Main-Bold.ttf
new file mode 100644
index 0000000..f7956ab
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Bold.ttf
diff --git a/client/katex/fonts/KaTeX_Main-Bold.woff b/client/katex/fonts/KaTeX_Main-Bold.woff
new file mode 100644
index 0000000..f6eb231
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Bold.woff
diff --git a/client/katex/fonts/KaTeX_Main-Bold.woff2 b/client/katex/fonts/KaTeX_Main-Bold.woff2
new file mode 100644
index 0000000..994f3de
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Bold.woff2
diff --git a/client/katex/fonts/KaTeX_Main-Italic.eot b/client/katex/fonts/KaTeX_Main-Italic.eot
new file mode 100644
index 0000000..693bdf7
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Italic.eot
diff --git a/client/katex/fonts/KaTeX_Main-Italic.ttf b/client/katex/fonts/KaTeX_Main-Italic.ttf
new file mode 100644
index 0000000..0d00c60
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Italic.ttf
diff --git a/client/katex/fonts/KaTeX_Main-Italic.woff b/client/katex/fonts/KaTeX_Main-Italic.woff
new file mode 100644
index 0000000..43126b3
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Italic.woff
diff --git a/client/katex/fonts/KaTeX_Main-Italic.woff2 b/client/katex/fonts/KaTeX_Main-Italic.woff2
new file mode 100644
index 0000000..3430573
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Italic.woff2
diff --git a/client/katex/fonts/KaTeX_Main-Regular.eot b/client/katex/fonts/KaTeX_Main-Regular.eot
new file mode 100644
index 0000000..bd59c88
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Main-Regular.ttf b/client/katex/fonts/KaTeX_Main-Regular.ttf
new file mode 100644
index 0000000..6f3cdca
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Main-Regular.woff b/client/katex/fonts/KaTeX_Main-Regular.woff
new file mode 100644
index 0000000..57e7f4b
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Main-Regular.woff2 b/client/katex/fonts/KaTeX_Main-Regular.woff2
new file mode 100644
index 0000000..8c98320
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Main-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Math-BoldItalic.eot b/client/katex/fonts/KaTeX_Math-BoldItalic.eot
new file mode 100644
index 0000000..7705bfc
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+++ b/client/katex/fonts/KaTeX_Math-BoldItalic.eot
diff --git a/client/katex/fonts/KaTeX_Math-BoldItalic.ttf b/client/katex/fonts/KaTeX_Math-BoldItalic.ttf
new file mode 100644
index 0000000..ab60f80
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Math-BoldItalic.ttf
diff --git a/client/katex/fonts/KaTeX_Math-BoldItalic.woff b/client/katex/fonts/KaTeX_Math-BoldItalic.woff
new file mode 100644
index 0000000..f5dee4e
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Math-BoldItalic.woff
diff --git a/client/katex/fonts/KaTeX_Math-BoldItalic.woff2 b/client/katex/fonts/KaTeX_Math-BoldItalic.woff2
new file mode 100644
index 0000000..bfe677c
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+++ b/client/katex/fonts/KaTeX_Math-BoldItalic.woff2
diff --git a/client/katex/fonts/KaTeX_Math-Italic.eot b/client/katex/fonts/KaTeX_Math-Italic.eot
new file mode 100644
index 0000000..fc9bf19
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Math-Italic.eot
diff --git a/client/katex/fonts/KaTeX_Math-Italic.ttf b/client/katex/fonts/KaTeX_Math-Italic.ttf
new file mode 100644
index 0000000..a4078ea
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+++ b/client/katex/fonts/KaTeX_Math-Italic.ttf
diff --git a/client/katex/fonts/KaTeX_Math-Italic.woff b/client/katex/fonts/KaTeX_Math-Italic.woff
new file mode 100644
index 0000000..fc21e64
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diff --git a/client/katex/fonts/KaTeX_Math-Italic.woff2 b/client/katex/fonts/KaTeX_Math-Italic.woff2
new file mode 100644
index 0000000..0ef8a1e
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Math-Italic.woff2
diff --git a/client/katex/fonts/KaTeX_Math-Regular.eot b/client/katex/fonts/KaTeX_Math-Regular.eot
new file mode 100644
index 0000000..14b0c2a
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Math-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Math-Regular.ttf b/client/katex/fonts/KaTeX_Math-Regular.ttf
new file mode 100644
index 0000000..f256102
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Math-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Math-Regular.woff b/client/katex/fonts/KaTeX_Math-Regular.woff
new file mode 100644
index 0000000..847ba37
--- /dev/null
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diff --git a/client/katex/fonts/KaTeX_Math-Regular.woff2 b/client/katex/fonts/KaTeX_Math-Regular.woff2
new file mode 100644
index 0000000..24b63d8
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Math-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_SansSerif-Bold.eot b/client/katex/fonts/KaTeX_SansSerif-Bold.eot
new file mode 100644
index 0000000..bf95b14
--- /dev/null
+++ b/client/katex/fonts/KaTeX_SansSerif-Bold.eot
diff --git a/client/katex/fonts/KaTeX_SansSerif-Bold.ttf b/client/katex/fonts/KaTeX_SansSerif-Bold.ttf
new file mode 100644
index 0000000..952f333
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diff --git a/client/katex/fonts/KaTeX_SansSerif-Bold.woff b/client/katex/fonts/KaTeX_SansSerif-Bold.woff
new file mode 100644
index 0000000..83ce37d
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+++ b/client/katex/fonts/KaTeX_SansSerif-Bold.woff
diff --git a/client/katex/fonts/KaTeX_SansSerif-Bold.woff2 b/client/katex/fonts/KaTeX_SansSerif-Bold.woff2
new file mode 100644
index 0000000..09caf7d
--- /dev/null
+++ b/client/katex/fonts/KaTeX_SansSerif-Bold.woff2
diff --git a/client/katex/fonts/KaTeX_SansSerif-Italic.eot b/client/katex/fonts/KaTeX_SansSerif-Italic.eot
new file mode 100644
index 0000000..215f326
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+++ b/client/katex/fonts/KaTeX_SansSerif-Italic.eot
diff --git a/client/katex/fonts/KaTeX_SansSerif-Italic.ttf b/client/katex/fonts/KaTeX_SansSerif-Italic.ttf
new file mode 100644
index 0000000..6a510f5
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+++ b/client/katex/fonts/KaTeX_SansSerif-Italic.ttf
diff --git a/client/katex/fonts/KaTeX_SansSerif-Italic.woff b/client/katex/fonts/KaTeX_SansSerif-Italic.woff
new file mode 100644
index 0000000..5e82a46
--- /dev/null
+++ b/client/katex/fonts/KaTeX_SansSerif-Italic.woff
diff --git a/client/katex/fonts/KaTeX_SansSerif-Italic.woff2 b/client/katex/fonts/KaTeX_SansSerif-Italic.woff2
new file mode 100644
index 0000000..8d47a38
--- /dev/null
+++ b/client/katex/fonts/KaTeX_SansSerif-Italic.woff2
diff --git a/client/katex/fonts/KaTeX_SansSerif-Regular.eot b/client/katex/fonts/KaTeX_SansSerif-Regular.eot
new file mode 100644
index 0000000..4f3d6ab
--- /dev/null
+++ b/client/katex/fonts/KaTeX_SansSerif-Regular.eot
diff --git a/client/katex/fonts/KaTeX_SansSerif-Regular.ttf b/client/katex/fonts/KaTeX_SansSerif-Regular.ttf
new file mode 100644
index 0000000..4588a78
--- /dev/null
+++ b/client/katex/fonts/KaTeX_SansSerif-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_SansSerif-Regular.woff b/client/katex/fonts/KaTeX_SansSerif-Regular.woff
new file mode 100644
index 0000000..88ae8c2
--- /dev/null
+++ b/client/katex/fonts/KaTeX_SansSerif-Regular.woff
diff --git a/client/katex/fonts/KaTeX_SansSerif-Regular.woff2 b/client/katex/fonts/KaTeX_SansSerif-Regular.woff2
new file mode 100644
index 0000000..3feeb7b
--- /dev/null
+++ b/client/katex/fonts/KaTeX_SansSerif-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Script-Regular.eot b/client/katex/fonts/KaTeX_Script-Regular.eot
new file mode 100644
index 0000000..65082f0
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Script-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Script-Regular.ttf b/client/katex/fonts/KaTeX_Script-Regular.ttf
new file mode 100644
index 0000000..db1a4cc
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+++ b/client/katex/fonts/KaTeX_Script-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Script-Regular.woff b/client/katex/fonts/KaTeX_Script-Regular.woff
new file mode 100644
index 0000000..d2711e4
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+++ b/client/katex/fonts/KaTeX_Script-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Script-Regular.woff2 b/client/katex/fonts/KaTeX_Script-Regular.woff2
new file mode 100644
index 0000000..ff0c5cf
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Script-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Size1-Regular.eot b/client/katex/fonts/KaTeX_Size1-Regular.eot
new file mode 100644
index 0000000..0a581e8
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size1-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Size1-Regular.ttf b/client/katex/fonts/KaTeX_Size1-Regular.ttf
new file mode 100644
index 0000000..2fb653b
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size1-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Size1-Regular.woff b/client/katex/fonts/KaTeX_Size1-Regular.woff
new file mode 100644
index 0000000..359a864
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size1-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Size1-Regular.woff2 b/client/katex/fonts/KaTeX_Size1-Regular.woff2
new file mode 100644
index 0000000..764c933
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size1-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Size2-Regular.eot b/client/katex/fonts/KaTeX_Size2-Regular.eot
new file mode 100644
index 0000000..8af6638
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size2-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Size2-Regular.ttf b/client/katex/fonts/KaTeX_Size2-Regular.ttf
new file mode 100644
index 0000000..2852034
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size2-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Size2-Regular.woff b/client/katex/fonts/KaTeX_Size2-Regular.woff
new file mode 100644
index 0000000..d97cabc
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size2-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Size2-Regular.woff2 b/client/katex/fonts/KaTeX_Size2-Regular.woff2
new file mode 100644
index 0000000..a51a1fd
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size2-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Size3-Regular.eot b/client/katex/fonts/KaTeX_Size3-Regular.eot
new file mode 100644
index 0000000..5c17983
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size3-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Size3-Regular.ttf b/client/katex/fonts/KaTeX_Size3-Regular.ttf
new file mode 100644
index 0000000..61df9a3
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size3-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Size3-Regular.woff b/client/katex/fonts/KaTeX_Size3-Regular.woff
new file mode 100644
index 0000000..7fd7bba
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size3-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Size3-Regular.woff2 b/client/katex/fonts/KaTeX_Size3-Regular.woff2
new file mode 100644
index 0000000..4a4ba33
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size3-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Size4-Regular.eot b/client/katex/fonts/KaTeX_Size4-Regular.eot
new file mode 100644
index 0000000..3734162
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size4-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Size4-Regular.ttf b/client/katex/fonts/KaTeX_Size4-Regular.ttf
new file mode 100644
index 0000000..4232618
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size4-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Size4-Regular.woff b/client/katex/fonts/KaTeX_Size4-Regular.woff
new file mode 100644
index 0000000..dd2cd18
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size4-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Size4-Regular.woff2 b/client/katex/fonts/KaTeX_Size4-Regular.woff2
new file mode 100644
index 0000000..14b0dc2
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Size4-Regular.woff2
diff --git a/client/katex/fonts/KaTeX_Typewriter-Regular.eot b/client/katex/fonts/KaTeX_Typewriter-Regular.eot
new file mode 100644
index 0000000..3d58803
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Typewriter-Regular.eot
diff --git a/client/katex/fonts/KaTeX_Typewriter-Regular.ttf b/client/katex/fonts/KaTeX_Typewriter-Regular.ttf
new file mode 100644
index 0000000..a2f5990
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Typewriter-Regular.ttf
diff --git a/client/katex/fonts/KaTeX_Typewriter-Regular.woff b/client/katex/fonts/KaTeX_Typewriter-Regular.woff
new file mode 100644
index 0000000..f33b841
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Typewriter-Regular.woff
diff --git a/client/katex/fonts/KaTeX_Typewriter-Regular.woff2 b/client/katex/fonts/KaTeX_Typewriter-Regular.woff2
new file mode 100644
index 0000000..52b5538
--- /dev/null
+++ b/client/katex/fonts/KaTeX_Typewriter-Regular.woff2
diff --git a/client/katex/katex.js b/client/katex/katex.js
new file mode 100644
index 0000000..7ff56bf
--- /dev/null
+++ b/client/katex/katex.js
@@ -0,0 +1,8246 @@
+(function(e){if("function"==typeof bootstrap)bootstrap("katex",e);else if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeKatex=e}else"undefined"!=typeof window?window.katex=e():global.katex=e()})(function(){var define,ses,bootstrap,module,exports;
+return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+/**
+ * This is the main entry point for KaTeX. Here, we expose functions for
+ * rendering expressions either to DOM nodes or to markup strings.
+ *
+ * We also expose the ParseError class to check if errors thrown from KaTeX are
+ * errors in the expression, or errors in javascript handling.
+ */
+
+var ParseError = require("./src/ParseError");
+var Settings = require("./src/Settings");
+
+var buildTree = require("./src/buildTree");
+var parseTree = require("./src/parseTree");
+var utils = require("./src/utils");
+
+/**
+ * Parse and build an expression, and place that expression in the DOM node
+ * given.
+ */
+var render = function(expression, baseNode, options) {
+    utils.clearNode(baseNode);
+
+    var settings = new Settings(options);
+
+    var tree = parseTree(expression, settings);
+    var node = buildTree(tree, expression, settings).toNode();
+
+    baseNode.appendChild(node);
+};
+
+// KaTeX's styles don't work properly in quirks mode. Print out an error, and
+// disable rendering.
+if (typeof document !== "undefined") {
+    if (document.compatMode !== "CSS1Compat") {
+        typeof console !== "undefined" && console.warn(
+            "Warning: KaTeX doesn't work in quirks mode. Make sure your " +
+                "website has a suitable doctype.");
+
+        render = function() {
+            throw new ParseError("KaTeX doesn't work in quirks mode.");
+        };
+    }
+}
+
+/**
+ * Parse and build an expression, and return the markup for that.
+ */
+var renderToString = function(expression, options) {
+    var settings = new Settings(options);
+
+    var tree = parseTree(expression, settings);
+    return buildTree(tree, expression, settings).toMarkup();
+};
+
+/**
+ * Parse an expression and return the parse tree.
+ */
+var generateParseTree = function(expression, options) {
+    var settings = new Settings(options);
+    return parseTree(expression, settings);
+};
+
+module.exports = {
+    render: render,
+    renderToString: renderToString,
+    /**
+     * NOTE: This method is not currently recommended for public use.
+     * The internal tree representation is unstable and is very likely
+     * to change. Use at your own risk.
+     */
+    __parse: generateParseTree,
+    ParseError: ParseError
+};
+
+},{"./src/ParseError":5,"./src/Settings":7,"./src/buildTree":12,"./src/parseTree":20,"./src/utils":22}],2:[function(require,module,exports){
+/** @flow */
+
+"use strict";
+
+function getRelocatable(re) {
+  // In the future, this could use a WeakMap instead of an expando.
+  if (!re.__matchAtRelocatable) {
+    // Disjunctions are the lowest-precedence operator, so we can make any
+    // pattern match the empty string by appending `|()` to it:
+    // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-patterns
+    var source = re.source + "|()";
+
+    // We always make the new regex global.
+    var flags = "g" + (re.ignoreCase ? "i" : "") + (re.multiline ? "m" : "") + (re.unicode ? "u" : "")
+    // sticky (/.../y) doesn't make sense in conjunction with our relocation
+    // logic, so we ignore it here.
+    ;
+
+    re.__matchAtRelocatable = new RegExp(source, flags);
+  }
+  return re.__matchAtRelocatable;
+}
+
+function matchAt(re, str, pos) {
+  if (re.global || re.sticky) {
+    throw new Error("matchAt(...): Only non-global regexes are supported");
+  }
+  var reloc = getRelocatable(re);
+  reloc.lastIndex = pos;
+  var match = reloc.exec(str);
+  // Last capturing group is our sentinel that indicates whether the regex
+  // matched at the given location.
+  if (match[match.length - 1] == null) {
+    // Original regex matched.
+    match.length = match.length - 1;
+    return match;
+  } else {
+    return null;
+  }
+}
+
+module.exports = matchAt;
+},{}],3:[function(require,module,exports){
+/**
+ * The Lexer class handles tokenizing the input in various ways. Since our
+ * parser expects us to be able to backtrack, the lexer allows lexing from any
+ * given starting point.
+ *
+ * Its main exposed function is the `lex` function, which takes a position to
+ * lex from and a type of token to lex. It defers to the appropriate `_innerLex`
+ * function.
+ *
+ * The various `_innerLex` functions perform the actual lexing of different
+ * kinds.
+ */
+
+var matchAt = require("match-at");
+
+var ParseError = require("./ParseError");
+
+// The main lexer class
+function Lexer(input) {
+    this._input = input;
+}
+
+// The resulting token returned from `lex`.
+function Token(text, data, position) {
+    this.text = text;
+    this.data = data;
+    this.position = position;
+}
+
+// "normal" types of tokens. These are tokens which can be matched by a simple
+// regex
+var mathNormals = [
+    /[/|@.""`0-9a-zA-Z]/, // ords
+    /[*+-]/, // bins
+    /[=<>:]/, // rels
+    /[,;]/, // punctuation
+    /['\^_{}]/, // misc
+    /[(\[]/, // opens
+    /[)\]?!]/, // closes
+    /~/, // spacing
+    /&/, // horizontal alignment
+    /\\\\/ // line break
+];
+
+// These are "normal" tokens like above, but should instead be parsed in text
+// mode.
+var textNormals = [
+    /[a-zA-Z0-9`!@*()-=+\[\]'";:?\/.,]/, // ords
+    /[{}]/, // grouping
+    /~/, // spacing
+    /&/, // horizontal alignment
+    /\\\\/ // line break
+];
+
+// Regexes for matching whitespace
+var whitespaceRegex = /\s*/;
+var whitespaceConcatRegex = / +|\\  +/;
+
+// This regex matches any other TeX function, which is a backslash followed by a
+// word or a single symbol
+var anyFunc = /\\(?:[a-zA-Z]+|.)/;
+
+/**
+ * This function lexes a single normal token. It takes a position, a list of
+ * "normal" tokens to try, and whether it should completely ignore whitespace or
+ * not.
+ */
+Lexer.prototype._innerLex = function(pos, normals, ignoreWhitespace) {
+    var input = this._input;
+    var whitespace;
+
+    if (ignoreWhitespace) {
+        // Get rid of whitespace.
+        whitespace = matchAt(whitespaceRegex, input, pos)[0];
+        pos += whitespace.length;
+    } else {
+        // Do the funky concatenation of whitespace that happens in text mode.
+        whitespace = matchAt(whitespaceConcatRegex, input, pos);
+        if (whitespace !== null) {
+            return new Token(" ", null, pos + whitespace[0].length);
+        }
+    }
+
+    // If there's no more input to parse, return an EOF token
+    if (pos === input.length) {
+        return new Token("EOF", null, pos);
+    }
+
+    var match;
+    if ((match = matchAt(anyFunc, input, pos))) {
+        // If we match a function token, return it
+        return new Token(match[0], null, pos + match[0].length);
+    } else {
+        // Otherwise, we look through the normal token regexes and see if it's
+        // one of them.
+        for (var i = 0; i < normals.length; i++) {
+            var normal = normals[i];
+
+            if ((match = matchAt(normal, input, pos))) {
+                // If it is, return it
+                return new Token(
+                    match[0], null, pos + match[0].length);
+            }
+        }
+    }
+
+    throw new ParseError(
+            "Unexpected character: '" + input[pos] + "'",
+            this, pos);
+};
+
+// A regex to match a CSS color (like #ffffff or BlueViolet)
+var cssColor = /#[a-z0-9]+|[a-z]+/i;
+
+/**
+ * This function lexes a CSS color.
+ */
+Lexer.prototype._innerLexColor = function(pos) {
+    var input = this._input;
+
+    // Ignore whitespace
+    var whitespace = matchAt(whitespaceRegex, input, pos)[0];
+    pos += whitespace.length;
+
+    var match;
+    if ((match = matchAt(cssColor, input, pos))) {
+        // If we look like a color, return a color
+        return new Token(match[0], null, pos + match[0].length);
+    } else {
+        throw new ParseError("Invalid color", this, pos);
+    }
+};
+
+// A regex to match a dimension. Dimensions look like
+// "1.2em" or ".4pt" or "1 ex"
+var sizeRegex = /(-?)\s*(\d+(?:\.\d*)?|\.\d+)\s*([a-z]{2})/;
+
+/**
+ * This function lexes a dimension.
+ */
+Lexer.prototype._innerLexSize = function(pos) {
+    var input = this._input;
+
+    // Ignore whitespace
+    var whitespace = matchAt(whitespaceRegex, input, pos)[0];
+    pos += whitespace.length;
+
+    var match;
+    if ((match = matchAt(sizeRegex, input, pos))) {
+        var unit = match[3];
+        // We only currently handle "em" and "ex" units
+        if (unit !== "em" && unit !== "ex") {
+            throw new ParseError("Invalid unit: '" + unit + "'", this, pos);
+        }
+        return new Token(match[0], {
+                number: +(match[1] + match[2]),
+                unit: unit
+            }, pos + match[0].length);
+    }
+
+    throw new ParseError("Invalid size", this, pos);
+};
+
+/**
+ * This function lexes a string of whitespace.
+ */
+Lexer.prototype._innerLexWhitespace = function(pos) {
+    var input = this._input;
+
+    var whitespace = matchAt(whitespaceRegex, input, pos)[0];
+    pos += whitespace.length;
+
+    return new Token(whitespace[0], null, pos);
+};
+
+/**
+ * This function lexes a single token starting at `pos` and of the given mode.
+ * Based on the mode, we defer to one of the `_innerLex` functions.
+ */
+Lexer.prototype.lex = function(pos, mode) {
+    if (mode === "math") {
+        return this._innerLex(pos, mathNormals, true);
+    } else if (mode === "text") {
+        return this._innerLex(pos, textNormals, false);
+    } else if (mode === "color") {
+        return this._innerLexColor(pos);
+    } else if (mode === "size") {
+        return this._innerLexSize(pos);
+    } else if (mode === "whitespace") {
+        return this._innerLexWhitespace(pos);
+    }
+};
+
+module.exports = Lexer;
+
+},{"./ParseError":5,"match-at":2}],4:[function(require,module,exports){
+/**
+ * This file contains information about the options that the Parser carries
+ * around with it while parsing. Data is held in an `Options` object, and when
+ * recursing, a new `Options` object can be created with the `.with*` and
+ * `.reset` functions.
+ */
+
+/**
+ * This is the main options class. It contains the style, size, color, and font
+ * of the current parse level. It also contains the style and size of the parent
+ * parse level, so size changes can be handled efficiently.
+ *
+ * Each of the `.with*` and `.reset` functions passes its current style and size
+ * as the parentStyle and parentSize of the new options class, so parent
+ * handling is taken care of automatically.
+ */
+function Options(data) {
+    this.style = data.style;
+    this.color = data.color;
+    this.size = data.size;
+    this.phantom = data.phantom;
+    this.font = data.font;
+
+    if (data.parentStyle === undefined) {
+        this.parentStyle = data.style;
+    } else {
+        this.parentStyle = data.parentStyle;
+    }
+
+    if (data.parentSize === undefined) {
+        this.parentSize = data.size;
+    } else {
+        this.parentSize = data.parentSize;
+    }
+}
+
+/**
+ * Returns a new options object with the same properties as "this".  Properties
+ * from "extension" will be copied to the new options object.
+ */
+Options.prototype.extend = function(extension) {
+    var data = {
+        style: this.style,
+        size: this.size,
+        color: this.color,
+        parentStyle: this.style,
+        parentSize: this.size,
+        phantom: this.phantom,
+        font: this.font
+    };
+
+    for (var key in extension) {
+        if (extension.hasOwnProperty(key)) {
+            data[key] = extension[key];
+        }
+    }
+
+    return new Options(data);
+};
+
+/**
+ * Create a new options object with the given style.
+ */
+Options.prototype.withStyle = function(style) {
+    return this.extend({
+        style: style
+    });
+};
+
+/**
+ * Create a new options object with the given size.
+ */
+Options.prototype.withSize = function(size) {
+    return this.extend({
+        size: size
+    });
+};
+
+/**
+ * Create a new options object with the given color.
+ */
+Options.prototype.withColor = function(color) {
+    return this.extend({
+        color: color
+    });
+};
+
+/**
+ * Create a new options object with "phantom" set to true.
+ */
+Options.prototype.withPhantom = function() {
+    return this.extend({
+        phantom: true
+    });
+};
+
+/**
+ * Create a new options objects with the give font.
+ */
+Options.prototype.withFont = function(font) {
+    return this.extend({
+        font: font
+    });
+};
+
+/**
+ * Create a new options object with the same style, size, and color. This is
+ * used so that parent style and size changes are handled correctly.
+ */
+Options.prototype.reset = function() {
+    return this.extend({});
+};
+
+/**
+ * A map of color names to CSS colors.
+ * TODO(emily): Remove this when we have real macros
+ */
+var colorMap = {
+    "katex-blue": "#6495ed",
+    "katex-orange": "#ffa500",
+    "katex-pink": "#ff00af",
+    "katex-red": "#df0030",
+    "katex-green": "#28ae7b",
+    "katex-gray": "gray",
+    "katex-purple": "#9d38bd",
+    "katex-blueA": "#c7e9f1",
+    "katex-blueB": "#9cdceb",
+    "katex-blueC": "#58c4dd",
+    "katex-blueD": "#29abca",
+    "katex-blueE": "#1c758a",
+    "katex-tealA": "#acead7",
+    "katex-tealB": "#76ddc0",
+    "katex-tealC": "#5cd0b3",
+    "katex-tealD": "#55c1a7",
+    "katex-tealE": "#49a88f",
+    "katex-greenA": "#c9e2ae",
+    "katex-greenB": "#a6cf8c",
+    "katex-greenC": "#83c167",
+    "katex-greenD": "#77b05d",
+    "katex-greenE": "#699c52",
+    "katex-goldA": "#f7c797",
+    "katex-goldB": "#f9b775",
+    "katex-goldC": "#f0ac5f",
+    "katex-goldD": "#e1a158",
+    "katex-goldE": "#c78d46",
+    "katex-redA": "#f7a1a3",
+    "katex-redB": "#ff8080",
+    "katex-redC": "#fc6255",
+    "katex-redD": "#e65a4c",
+    "katex-redE": "#cf5044",
+    "katex-maroonA": "#ecabc1",
+    "katex-maroonB": "#ec92ab",
+    "katex-maroonC": "#c55f73",
+    "katex-maroonD": "#a24d61",
+    "katex-maroonE": "#94424f",
+    "katex-purpleA": "#caa3e8",
+    "katex-purpleB": "#b189c6",
+    "katex-purpleC": "#9a72ac",
+    "katex-purpleD": "#715582",
+    "katex-purpleE": "#644172",
+    "katex-mintA": "#f5f9e8",
+    "katex-mintB": "#edf2df",
+    "katex-mintC": "#e0e5cc",
+    "katex-grayA": "#fdfdfd",
+    "katex-grayB": "#f7f7f7",
+    "katex-grayC": "#eeeeee",
+    "katex-grayD": "#dddddd",
+    "katex-grayE": "#cccccc",
+    "katex-grayF": "#aaaaaa",
+    "katex-grayG": "#999999",
+    "katex-grayH": "#555555",
+    "katex-grayI": "#333333",
+    "katex-kaBlue": "#314453",
+    "katex-kaGreen": "#639b24"
+};
+
+/**
+ * Gets the CSS color of the current options object, accounting for the
+ * `colorMap`.
+ */
+Options.prototype.getColor = function() {
+    if (this.phantom) {
+        return "transparent";
+    } else {
+        return colorMap[this.color] || this.color;
+    }
+};
+
+module.exports = Options;
+
+},{}],5:[function(require,module,exports){
+/**
+ * This is the ParseError class, which is the main error thrown by KaTeX
+ * functions when something has gone wrong. This is used to distinguish internal
+ * errors from errors in the expression that the user provided.
+ */
+function ParseError(message, lexer, position) {
+    var error = "KaTeX parse error: " + message;
+
+    if (lexer !== undefined && position !== undefined) {
+        // If we have the input and a position, make the error a bit fancier
+
+        // Prepend some information
+        error += " at position " + position + ": ";
+
+        // Get the input
+        var input = lexer._input;
+        // Insert a combining underscore at the correct position
+        input = input.slice(0, position) + "\u0332" +
+            input.slice(position);
+
+        // Extract some context from the input and add it to the error
+        var begin = Math.max(0, position - 15);
+        var end = position + 15;
+        error += input.slice(begin, end);
+    }
+
+    // Some hackery to make ParseError a prototype of Error
+    // See http://stackoverflow.com/a/8460753
+    var self = new Error(error);
+    self.name = "ParseError";
+    self.__proto__ = ParseError.prototype;
+
+    self.position = position;
+    return self;
+}
+
+// More hackery
+ParseError.prototype.__proto__ = Error.prototype;
+
+module.exports = ParseError;
+
+},{}],6:[function(require,module,exports){
+var functions = require("./functions");
+var environments = require("./environments");
+var Lexer = require("./Lexer");
+var symbols = require("./symbols");
+var utils = require("./utils");
+
+var parseData = require("./parseData");
+var ParseError = require("./ParseError");
+
+/**
+ * This file contains the parser used to parse out a TeX expression from the
+ * input. Since TeX isn't context-free, standard parsers don't work particularly
+ * well.
+ *
+ * The strategy of this parser is as such:
+ *
+ * The main functions (the `.parse...` ones) take a position in the current
+ * parse string to parse tokens from. The lexer (found in Lexer.js, stored at
+ * this.lexer) also supports pulling out tokens at arbitrary places. When
+ * individual tokens are needed at a position, the lexer is called to pull out a
+ * token, which is then used.
+ *
+ * The main functions also take a mode that the parser is currently in
+ * (currently "math" or "text"), which denotes whether the current environment
+ * is a math-y one or a text-y one (e.g. inside \text). Currently, this serves
+ * to limit the functions which can be used in text mode.
+ *
+ * The main functions then return an object which contains the useful data that
+ * was parsed at its given point, and a new position at the end of the parsed
+ * data. The main functions can call each other and continue the parsing by
+ * using the returned position as a new starting point.
+ *
+ * There are also extra `.handle...` functions, which pull out some reused
+ * functionality into self-contained functions.
+ *
+ * The earlier functions return `ParseResult`s, which contain a ParseNode and a
+ * new position.
+ *
+ * The later functions (which are called deeper in the parse) sometimes return
+ * ParseFuncOrArgument, which contain a ParseResult as well as some data about
+ * whether the parsed object is a function which is missing some arguments, or a
+ * standalone object which can be used as an argument to another function.
+ */
+
+/**
+ * Main Parser class
+ */
+function Parser(input, settings) {
+    // Make a new lexer
+    this.lexer = new Lexer(input);
+    // Store the settings for use in parsing
+    this.settings = settings;
+}
+
+var ParseNode = parseData.ParseNode;
+var ParseResult = parseData.ParseResult;
+
+/**
+ * An initial function (without its arguments), or an argument to a function.
+ * The `result` argument should be a ParseResult.
+ */
+function ParseFuncOrArgument(result, isFunction) {
+    this.result = result;
+    // Is this a function (i.e. is it something defined in functions.js)?
+    this.isFunction = isFunction;
+}
+
+/**
+ * Checks a result to make sure it has the right type, and throws an
+ * appropriate error otherwise.
+ */
+Parser.prototype.expect = function(result, text) {
+    if (result.text !== text) {
+        throw new ParseError(
+            "Expected '" + text + "', got '" + result.text + "'",
+            this.lexer, result.position
+        );
+    }
+};
+
+/**
+ * Main parsing function, which parses an entire input.
+ *
+ * @return {?Array.<ParseNode>}
+ */
+Parser.prototype.parse = function(input) {
+    // Try to parse the input
+    var parse = this.parseInput(0, "math");
+    return parse.result;
+};
+
+/**
+ * Parses an entire input tree.
+ */
+Parser.prototype.parseInput = function(pos, mode) {
+    // Parse an expression
+    var expression = this.parseExpression(pos, mode, false);
+    // If we succeeded, make sure there's an EOF at the end
+    this.expect(expression.peek, "EOF");
+    return expression;
+};
+
+var endOfExpression = ["}", "\\end", "\\right", "&", "\\\\", "\\cr"];
+
+/**
+ * Parses an "expression", which is a list of atoms.
+ *
+ * @param {boolean} breakOnInfix Should the parsing stop when we hit infix
+ *                  nodes? This happens when functions have higher precendence
+ *                  than infix nodes in implicit parses.
+ *
+ * @param {?string} breakOnToken The token that the expression should end with,
+ *                  or `null` if something else should end the expression.
+ *
+ * @return {ParseResult}
+ */
+Parser.prototype.parseExpression = function(pos, mode, breakOnInfix, breakOnToken) {
+    var body = [];
+    var lex = null;
+    // Keep adding atoms to the body until we can't parse any more atoms (either
+    // we reached the end, a }, or a \right)
+    while (true) {
+        lex = this.lexer.lex(pos, mode);
+        if (endOfExpression.indexOf(lex.text) !== -1) {
+            break;
+        }
+        if (breakOnToken && lex.text === breakOnToken) {
+            break;
+        }
+        var atom = this.parseAtom(pos, mode);
+        if (!atom) {
+            break;
+        }
+        if (breakOnInfix && atom.result.type === "infix") {
+            break;
+        }
+        body.push(atom.result);
+        pos = atom.position;
+    }
+    var res = new ParseResult(this.handleInfixNodes(body, mode), pos);
+    res.peek = lex;
+    return res;
+};
+
+/**
+ * Rewrites infix operators such as \over with corresponding commands such
+ * as \frac.
+ *
+ * There can only be one infix operator per group.  If there's more than one
+ * then the expression is ambiguous.  This can be resolved by adding {}.
+ *
+ * @returns {Array}
+ */
+Parser.prototype.handleInfixNodes = function (body, mode) {
+    var overIndex = -1;
+    var func;
+    var funcName;
+
+    for (var i = 0; i < body.length; i++) {
+        var node = body[i];
+        if (node.type === "infix") {
+            if (overIndex !== -1) {
+                throw new ParseError("only one infix operator per group",
+                    this.lexer, -1);
+            }
+            overIndex = i;
+            funcName = node.value.replaceWith;
+            func = functions.funcs[funcName];
+        }
+    }
+
+    if (overIndex !== -1) {
+        var numerNode, denomNode;
+
+        var numerBody = body.slice(0, overIndex);
+        var denomBody = body.slice(overIndex + 1);
+
+        if (numerBody.length === 1 && numerBody[0].type === "ordgroup") {
+            numerNode = numerBody[0];
+        } else {
+            numerNode = new ParseNode("ordgroup", numerBody, mode);
+        }
+
+        if (denomBody.length === 1 && denomBody[0].type === "ordgroup") {
+            denomNode = denomBody[0];
+        } else {
+            denomNode = new ParseNode("ordgroup", denomBody, mode);
+        }
+
+        var value = func.handler(funcName, numerNode, denomNode);
+        return [new ParseNode(value.type, value, mode)];
+    } else {
+        return body;
+    }
+};
+
+// The greediness of a superscript or subscript
+var SUPSUB_GREEDINESS = 1;
+
+/**
+ * Handle a subscript or superscript with nice errors.
+ */
+Parser.prototype.handleSupSubscript = function(pos, mode, symbol, name) {
+    var group = this.parseGroup(pos, mode);
+
+    if (!group) {
+        throw new ParseError(
+            "Expected group after '" + symbol + "'", this.lexer, pos);
+    } else if (group.isFunction) {
+        // ^ and _ have a greediness, so handle interactions with functions'
+        // greediness
+        var funcGreediness = functions.funcs[group.result.result].greediness;
+        if (funcGreediness > SUPSUB_GREEDINESS) {
+            return this.parseFunction(pos, mode);
+        } else {
+            throw new ParseError(
+                "Got function '" + group.result.result + "' with no arguments " +
+                    "as " + name,
+                this.lexer, pos);
+        }
+    } else {
+        return group.result;
+    }
+};
+
+/**
+ * Parses a group with optional super/subscripts.
+ *
+ * @return {?ParseResult}
+ */
+Parser.prototype.parseAtom = function(pos, mode) {
+    // The body of an atom is an implicit group, so that things like
+    // \left(x\right)^2 work correctly.
+    var base = this.parseImplicitGroup(pos, mode);
+
+    // In text mode, we don't have superscripts or subscripts
+    if (mode === "text") {
+        return base;
+    }
+
+    // Handle an empty base
+    var currPos;
+    if (!base) {
+        currPos = pos;
+        base = undefined;
+    } else {
+        currPos = base.position;
+    }
+
+    var superscript;
+    var subscript;
+    var result;
+    while (true) {
+        // Lex the first token
+        var lex = this.lexer.lex(currPos, mode);
+
+        if (lex.text === "^") {
+            // We got a superscript start
+            if (superscript) {
+                throw new ParseError(
+                    "Double superscript", this.lexer, currPos);
+            }
+            result = this.handleSupSubscript(
+                lex.position, mode, lex.text, "superscript");
+            currPos = result.position;
+            superscript = result.result;
+        } else if (lex.text === "_") {
+            // We got a subscript start
+            if (subscript) {
+                throw new ParseError(
+                    "Double subscript", this.lexer, currPos);
+            }
+            result = this.handleSupSubscript(
+                lex.position, mode, lex.text, "subscript");
+            currPos = result.position;
+            subscript = result.result;
+        } else if (lex.text === "'") {
+            // We got a prime
+            var prime = new ParseNode("textord", "\\prime", mode);
+
+            // Many primes can be grouped together, so we handle this here
+            var primes = [prime];
+            currPos = lex.position;
+            // Keep lexing tokens until we get something that's not a prime
+            while ((lex = this.lexer.lex(currPos, mode)).text === "'") {
+                // For each one, add another prime to the list
+                primes.push(prime);
+                currPos = lex.position;
+            }
+            // Put them into an ordgroup as the superscript
+            superscript = new ParseNode("ordgroup", primes, mode);
+        } else {
+            // If it wasn't ^, _, or ', stop parsing super/subscripts
+            break;
+        }
+    }
+
+    if (superscript || subscript) {
+        // If we got either a superscript or subscript, create a supsub
+        return new ParseResult(
+            new ParseNode("supsub", {
+                base: base && base.result,
+                sup: superscript,
+                sub: subscript
+            }, mode),
+            currPos);
+    } else {
+        // Otherwise return the original body
+        return base;
+    }
+};
+
+// A list of the size-changing functions, for use in parseImplicitGroup
+var sizeFuncs = [
+    "\\tiny", "\\scriptsize", "\\footnotesize", "\\small", "\\normalsize",
+    "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge"
+];
+
+// A list of the style-changing functions, for use in parseImplicitGroup
+var styleFuncs = [
+    "\\displaystyle", "\\textstyle", "\\scriptstyle", "\\scriptscriptstyle"
+];
+
+/**
+ * Parses an implicit group, which is a group that starts at the end of a
+ * specified, and ends right before a higher explicit group ends, or at EOL. It
+ * is used for functions that appear to affect the current style, like \Large or
+ * \textrm, where instead of keeping a style we just pretend that there is an
+ * implicit grouping after it until the end of the group. E.g.
+ *   small text {\Large large text} small text again
+ * It is also used for \left and \right to get the correct grouping.
+ *
+ * @return {?ParseResult}
+ */
+Parser.prototype.parseImplicitGroup = function(pos, mode) {
+    var start = this.parseSymbol(pos, mode);
+
+    if (!start || !start.result) {
+        // If we didn't get anything we handle, fall back to parseFunction
+        return this.parseFunction(pos, mode);
+    }
+
+    var func = start.result.result;
+    var body;
+
+    if (func === "\\left") {
+        // If we see a left:
+        // Parse the entire left function (including the delimiter)
+        var left = this.parseFunction(pos, mode);
+        // Parse out the implicit body
+        body = this.parseExpression(left.position, mode, false);
+        // Check the next token
+        this.expect(body.peek, "\\right");
+        var right = this.parseFunction(body.position, mode);
+        return new ParseResult(
+            new ParseNode("leftright", {
+                body: body.result,
+                left: left.result.value.value,
+                right: right.result.value.value
+            }, mode),
+            right.position);
+    } else if (func === "\\begin") {
+        // begin...end is similar to left...right
+        var begin = this.parseFunction(pos, mode);
+        var envName = begin.result.value.name;
+        if (!environments.hasOwnProperty(envName)) {
+            throw new ParseError(
+                "No such environment: " + envName,
+                this.lexer, begin.result.value.namepos);
+        }
+        // Build the environment object. Arguments and other information will
+        // be made available to the begin and end methods using properties.
+        var env = environments[envName];
+        var args = [null, mode, envName];
+        var newPos = this.parseArguments(
+            begin.position, mode, "\\begin{" + envName + "}", env, args);
+        args[0] = newPos;
+        var result = env.handler.apply(this, args);
+        var endLex = this.lexer.lex(result.position, mode);
+        this.expect(endLex, "\\end");
+        var end = this.parseFunction(result.position, mode);
+        if (end.result.value.name !== envName) {
+            throw new ParseError(
+                "Mismatch: \\begin{" + envName + "} matched " +
+                "by \\end{" + end.result.value.name + "}",
+                this.lexer, end.namepos);
+        }
+        result.position = end.position;
+        return result;
+    } else if (utils.contains(sizeFuncs, func)) {
+        // If we see a sizing function, parse out the implict body
+        body = this.parseExpression(start.result.position, mode, false);
+        return new ParseResult(
+            new ParseNode("sizing", {
+                // Figure out what size to use based on the list of functions above
+                size: "size" + (utils.indexOf(sizeFuncs, func) + 1),
+                value: body.result
+            }, mode),
+            body.position);
+    } else if (utils.contains(styleFuncs, func)) {
+        // If we see a styling function, parse out the implict body
+        body = this.parseExpression(start.result.position, mode, true);
+        return new ParseResult(
+            new ParseNode("styling", {
+                // Figure out what style to use by pulling out the style from
+                // the function name
+                style: func.slice(1, func.length - 5),
+                value: body.result
+            }, mode),
+            body.position);
+    } else {
+        // Defer to parseFunction if it's not a function we handle
+        return this.parseFunction(pos, mode);
+    }
+};
+
+/**
+ * Parses an entire function, including its base and all of its arguments
+ *
+ * @return {?ParseResult}
+ */
+Parser.prototype.parseFunction = function(pos, mode) {
+    var baseGroup = this.parseGroup(pos, mode);
+
+    if (baseGroup) {
+        if (baseGroup.isFunction) {
+            var func = baseGroup.result.result;
+            var funcData = functions.funcs[func];
+            if (mode === "text" && !funcData.allowedInText) {
+                throw new ParseError(
+                    "Can't use function '" + func + "' in text mode",
+                    this.lexer, baseGroup.position);
+            }
+
+            var args = [func];
+            var newPos = this.parseArguments(
+                baseGroup.result.position, mode, func, funcData, args);
+            var result = functions.funcs[func].handler.apply(this, args);
+            return new ParseResult(
+                new ParseNode(result.type, result, mode),
+                newPos);
+        } else {
+            return baseGroup.result;
+        }
+    } else {
+        return null;
+    }
+};
+
+
+/**
+ * Parses the arguments of a function or environment
+ *
+ * @param {string} func  "\name" or "\begin{name}"
+ * @param {{numArgs:number,numOptionalArgs:number|undefined}} funcData
+ * @param {Array} args  list of arguments to which new ones will be pushed
+ * @return the position after all arguments have been parsed
+ */
+Parser.prototype.parseArguments = function(pos, mode, func, funcData, args) {
+    var totalArgs = funcData.numArgs + funcData.numOptionalArgs;
+    if (totalArgs === 0) {
+        return pos;
+    }
+
+    var newPos = pos;
+    var baseGreediness = funcData.greediness;
+    var positions = [newPos];
+
+    for (var i = 0; i < totalArgs; i++) {
+        var argType = funcData.argTypes && funcData.argTypes[i];
+        var arg;
+        if (i < funcData.numOptionalArgs) {
+            if (argType) {
+                arg = this.parseSpecialGroup(newPos, argType, mode, true);
+            } else {
+                arg = this.parseOptionalGroup(newPos, mode);
+            }
+            if (!arg) {
+                args.push(null);
+                positions.push(newPos);
+                continue;
+            }
+        } else {
+            if (argType) {
+                arg = this.parseSpecialGroup(newPos, argType, mode);
+            } else {
+                arg = this.parseGroup(newPos, mode);
+            }
+            if (!arg) {
+                throw new ParseError(
+                    "Expected group after '" + func + "'",
+                    this.lexer, newPos);
+            }
+        }
+        var argNode;
+        if (arg.isFunction) {
+            var argGreediness =
+                functions.funcs[arg.result.result].greediness;
+            if (argGreediness > baseGreediness) {
+                argNode = this.parseFunction(newPos, mode);
+            } else {
+                throw new ParseError(
+                    "Got function '" + arg.result.result + "' as " +
+                    "argument to '" + func + "'",
+                    this.lexer, arg.result.position - 1);
+            }
+        } else {
+            argNode = arg.result;
+        }
+        args.push(argNode.result);
+        positions.push(argNode.position);
+        newPos = argNode.position;
+    }
+
+    args.push(positions);
+
+    return newPos;
+};
+
+
+/**
+ * Parses a group when the mode is changing. Takes a position, a new mode, and
+ * an outer mode that is used to parse the outside.
+ *
+ * @return {?ParseFuncOrArgument}
+ */
+Parser.prototype.parseSpecialGroup = function(pos, mode, outerMode, optional) {
+    // Handle `original` argTypes
+    if (mode === "original") {
+        mode = outerMode;
+    }
+
+    if (mode === "color" || mode === "size") {
+        // color and size modes are special because they should have braces and
+        // should only lex a single symbol inside
+        var openBrace = this.lexer.lex(pos, outerMode);
+        if (optional && openBrace.text !== "[") {
+            // optional arguments should return null if they don't exist
+            return null;
+        }
+        this.expect(openBrace, optional ? "[" : "{");
+        var inner = this.lexer.lex(openBrace.position, mode);
+        var data;
+        if (mode === "color") {
+            data = inner.text;
+        } else {
+            data = inner.data;
+        }
+        var closeBrace = this.lexer.lex(inner.position, outerMode);
+        this.expect(closeBrace, optional ? "]" : "}");
+        return new ParseFuncOrArgument(
+            new ParseResult(
+                new ParseNode(mode, data, outerMode),
+                closeBrace.position),
+            false);
+    } else if (mode === "text") {
+        // text mode is special because it should ignore the whitespace before
+        // it
+        var whitespace = this.lexer.lex(pos, "whitespace");
+        pos = whitespace.position;
+    }
+
+    if (optional) {
+        return this.parseOptionalGroup(pos, mode);
+    } else {
+        return this.parseGroup(pos, mode);
+    }
+};
+
+/**
+ * Parses a group, which is either a single nucleus (like "x") or an expression
+ * in braces (like "{x+y}")
+ *
+ * @return {?ParseFuncOrArgument}
+ */
+Parser.prototype.parseGroup = function(pos, mode) {
+    var start = this.lexer.lex(pos, mode);
+    // Try to parse an open brace
+    if (start.text === "{") {
+        // If we get a brace, parse an expression
+        var expression = this.parseExpression(start.position, mode, false);
+        // Make sure we get a close brace
+        var closeBrace = this.lexer.lex(expression.position, mode);
+        this.expect(closeBrace, "}");
+        return new ParseFuncOrArgument(
+            new ParseResult(
+                new ParseNode("ordgroup", expression.result, mode),
+                closeBrace.position),
+            false);
+    } else {
+        // Otherwise, just return a nucleus
+        return this.parseSymbol(pos, mode);
+    }
+};
+
+/**
+ * Parses a group, which is an expression in brackets (like "[x+y]")
+ *
+ * @return {?ParseFuncOrArgument}
+ */
+Parser.prototype.parseOptionalGroup = function(pos, mode) {
+    var start = this.lexer.lex(pos, mode);
+    // Try to parse an open bracket
+    if (start.text === "[") {
+        // If we get a brace, parse an expression
+        var expression = this.parseExpression(start.position, mode, false, "]");
+        // Make sure we get a close bracket
+        var closeBracket = this.lexer.lex(expression.position, mode);
+        this.expect(closeBracket, "]");
+        return new ParseFuncOrArgument(
+            new ParseResult(
+                new ParseNode("ordgroup", expression.result, mode),
+                closeBracket.position),
+            false);
+    } else {
+        // Otherwise, return null,
+        return null;
+    }
+};
+
+/**
+ * Parse a single symbol out of the string. Here, we handle both the functions
+ * we have defined, as well as the single character symbols
+ *
+ * @return {?ParseFuncOrArgument}
+ */
+Parser.prototype.parseSymbol = function(pos, mode) {
+    var nucleus = this.lexer.lex(pos, mode);
+
+    if (functions.funcs[nucleus.text]) {
+        // If there exists a function with this name, we return the function and
+        // say that it is a function.
+        return new ParseFuncOrArgument(
+            new ParseResult(nucleus.text, nucleus.position),
+            true);
+    } else if (symbols[mode][nucleus.text]) {
+        // Otherwise if this is a no-argument function, find the type it
+        // corresponds to in the symbols map
+        return new ParseFuncOrArgument(
+            new ParseResult(
+                new ParseNode(symbols[mode][nucleus.text].group,
+                              nucleus.text, mode),
+                nucleus.position),
+            false);
+    } else {
+        return null;
+    }
+};
+
+Parser.prototype.ParseNode = ParseNode;
+
+module.exports = Parser;
+
+},{"./Lexer":3,"./ParseError":5,"./environments":15,"./functions":17,"./parseData":19,"./symbols":21,"./utils":22}],7:[function(require,module,exports){
+/**
+ * This is a module for storing settings passed into KaTeX. It correctly handles
+ * default settings.
+ */
+
+/**
+ * Helper function for getting a default value if the value is undefined
+ */
+function get(option, defaultValue) {
+    return option === undefined ? defaultValue : option;
+}
+
+/**
+ * The main Settings object
+ *
+ * The current options stored are:
+ *  - displayMode: Whether the expression should be typeset by default in
+ *                 textstyle or displaystyle (default false)
+ */
+function Settings(options) {
+    // allow null options
+    options = options || {};
+    this.displayMode = get(options.displayMode, false);
+}
+
+module.exports = Settings;
+
+},{}],8:[function(require,module,exports){
+/**
+ * This file contains information and classes for the various kinds of styles
+ * used in TeX. It provides a generic `Style` class, which holds information
+ * about a specific style. It then provides instances of all the different kinds
+ * of styles possible, and provides functions to move between them and get
+ * information about them.
+ */
+
+/**
+ * The main style class. Contains a unique id for the style, a size (which is
+ * the same for cramped and uncramped version of a style), a cramped flag, and a
+ * size multiplier, which gives the size difference between a style and
+ * textstyle.
+ */
+function Style(id, size, multiplier, cramped) {
+    this.id = id;
+    this.size = size;
+    this.cramped = cramped;
+    this.sizeMultiplier = multiplier;
+}
+
+/**
+ * Get the style of a superscript given a base in the current style.
+ */
+Style.prototype.sup = function() {
+    return styles[sup[this.id]];
+};
+
+/**
+ * Get the style of a subscript given a base in the current style.
+ */
+Style.prototype.sub = function() {
+    return styles[sub[this.id]];
+};
+
+/**
+ * Get the style of a fraction numerator given the fraction in the current
+ * style.
+ */
+Style.prototype.fracNum = function() {
+    return styles[fracNum[this.id]];
+};
+
+/**
+ * Get the style of a fraction denominator given the fraction in the current
+ * style.
+ */
+Style.prototype.fracDen = function() {
+    return styles[fracDen[this.id]];
+};
+
+/**
+ * Get the cramped version of a style (in particular, cramping a cramped style
+ * doesn't change the style).
+ */
+Style.prototype.cramp = function() {
+    return styles[cramp[this.id]];
+};
+
+/**
+ * HTML class name, like "displaystyle cramped"
+ */
+Style.prototype.cls = function() {
+    return sizeNames[this.size] + (this.cramped ? " cramped" : " uncramped");
+};
+
+/**
+ * HTML Reset class name, like "reset-textstyle"
+ */
+Style.prototype.reset = function() {
+    return resetNames[this.size];
+};
+
+// IDs of the different styles
+var D = 0;
+var Dc = 1;
+var T = 2;
+var Tc = 3;
+var S = 4;
+var Sc = 5;
+var SS = 6;
+var SSc = 7;
+
+// String names for the different sizes
+var sizeNames = [
+    "displaystyle textstyle",
+    "textstyle",
+    "scriptstyle",
+    "scriptscriptstyle"
+];
+
+// Reset names for the different sizes
+var resetNames = [
+    "reset-textstyle",
+    "reset-textstyle",
+    "reset-scriptstyle",
+    "reset-scriptscriptstyle"
+];
+
+// Instances of the different styles
+var styles = [
+    new Style(D, 0, 1.0, false),
+    new Style(Dc, 0, 1.0, true),
+    new Style(T, 1, 1.0, false),
+    new Style(Tc, 1, 1.0, true),
+    new Style(S, 2, 0.7, false),
+    new Style(Sc, 2, 0.7, true),
+    new Style(SS, 3, 0.5, false),
+    new Style(SSc, 3, 0.5, true)
+];
+
+// Lookup tables for switching from one style to another
+var sup = [S, Sc, S, Sc, SS, SSc, SS, SSc];
+var sub = [Sc, Sc, Sc, Sc, SSc, SSc, SSc, SSc];
+var fracNum = [T, Tc, S, Sc, SS, SSc, SS, SSc];
+var fracDen = [Tc, Tc, Sc, Sc, SSc, SSc, SSc, SSc];
+var cramp = [Dc, Dc, Tc, Tc, Sc, Sc, SSc, SSc];
+
+// We only export some of the styles. Also, we don't export the `Style` class so
+// no more styles can be generated.
+module.exports = {
+    DISPLAY: styles[D],
+    TEXT: styles[T],
+    SCRIPT: styles[S],
+    SCRIPTSCRIPT: styles[SS]
+};
+
+},{}],9:[function(require,module,exports){
+/**
+ * This module contains general functions that can be used for building
+ * different kinds of domTree nodes in a consistent manner.
+ */
+
+var domTree = require("./domTree");
+var fontMetrics = require("./fontMetrics");
+var symbols = require("./symbols");
+var utils = require("./utils");
+
+/**
+ * Makes a symbolNode after translation via the list of symbols in symbols.js.
+ * Correctly pulls out metrics for the character, and optionally takes a list of
+ * classes to be attached to the node.
+ */
+var makeSymbol = function(value, style, mode, color, classes) {
+    // Replace the value with its replaced value from symbol.js
+    if (symbols[mode][value] && symbols[mode][value].replace) {
+        value = symbols[mode][value].replace;
+    }
+
+    var metrics = fontMetrics.getCharacterMetrics(value, style);
+
+    var symbolNode;
+    if (metrics) {
+        symbolNode = new domTree.symbolNode(
+            value, metrics.height, metrics.depth, metrics.italic, metrics.skew,
+            classes);
+    } else {
+        // TODO(emily): Figure out a good way to only print this in development
+        typeof console !== "undefined" && console.warn(
+            "No character metrics for '" + value + "' in style '" +
+                style + "'");
+        symbolNode = new domTree.symbolNode(value, 0, 0, 0, 0, classes);
+    }
+
+    if (color) {
+        symbolNode.style.color = color;
+    }
+
+    return symbolNode;
+};
+
+/**
+ * Makes a symbol in Main-Regular or AMS-Regular.
+ * Used for rel, bin, open, close, inner, and punct.
+ */
+var mathsym = function(value, mode, color, classes) {
+    // Decide what font to render the symbol in by its entry in the symbols
+    // table.
+    if (symbols[mode][value].font === "main") {
+        return makeSymbol(value, "Main-Regular", mode, color, classes);
+    } else {
+        return makeSymbol(
+            value, "AMS-Regular", mode, color, classes.concat(["amsrm"]));
+    }
+};
+
+/**
+ * Makes a symbol in the default font for mathords and textords.
+ */
+var mathDefault = function(value, mode, color, classes, type) {
+    if (type === "mathord") {
+        return mathit(value, mode, color, classes);
+    } else if (type === "textord") {
+        return makeSymbol(
+            value, "Main-Regular", mode, color, classes.concat(["mathrm"]));
+    } else {
+        throw new Error("unexpected type: " + type + " in mathDefault");
+    }
+};
+
+/**
+ * Makes a symbol in the italic math font.
+ */
+var mathit = function(value, mode, color, classes) {
+    if (/[0-9]/.test(value.charAt(0)) ||
+        utils.contains(["\u0131", "\u0237"], value) ||
+        utils.contains(greekCapitals, value)) {
+        return makeSymbol(
+            value, "Main-Italic", mode, color, classes.concat(["mainit"]));
+    } else {
+        return makeSymbol(
+            value, "Math-Italic", mode, color, classes.concat(["mathit"]));
+    }
+};
+
+/**
+ * Makes either a mathord or textord in the correct font and color.
+ */
+var makeOrd = function(group, options, type) {
+    var mode = group.mode;
+    var value = group.value;
+    if (symbols[mode][value] && symbols[mode][value].replace) {
+        value = symbols[mode][value].replace;
+    }
+
+    var classes = ["mord"];
+    var color = options.getColor();
+
+    var font = options.font;
+    if (font) {
+        if (font === "mathit" || utils.contains(["\u0131", "\u0237"], value)) {
+            return mathit(value, mode, color, classes.concat(["mathit"]));
+        } else {
+            var fontName = fontMap[font].fontName;
+            if (fontMetrics.getCharacterMetrics(value, fontName)) {
+                return makeSymbol(value, fontName, mode, color, classes.concat([font]));
+            } else {
+                return mathDefault(value, mode, color, classes, type);
+            }
+        }
+    } else {
+        return mathDefault(value, mode, color, classes, type);
+    }
+};
+
+/**
+ * Calculate the height, depth, and maxFontSize of an element based on its
+ * children.
+ */
+var sizeElementFromChildren = function(elem) {
+    var height = 0;
+    var depth = 0;
+    var maxFontSize = 0;
+
+    if (elem.children) {
+        for (var i = 0; i < elem.children.length; i++) {
+            if (elem.children[i].height > height) {
+                height = elem.children[i].height;
+            }
+            if (elem.children[i].depth > depth) {
+                depth = elem.children[i].depth;
+            }
+            if (elem.children[i].maxFontSize > maxFontSize) {
+                maxFontSize = elem.children[i].maxFontSize;
+            }
+        }
+    }
+
+    elem.height = height;
+    elem.depth = depth;
+    elem.maxFontSize = maxFontSize;
+};
+
+/**
+ * Makes a span with the given list of classes, list of children, and color.
+ */
+var makeSpan = function(classes, children, color) {
+    var span = new domTree.span(classes, children);
+
+    sizeElementFromChildren(span);
+
+    if (color) {
+        span.style.color = color;
+    }
+
+    return span;
+};
+
+/**
+ * Makes a document fragment with the given list of children.
+ */
+var makeFragment = function(children) {
+    var fragment = new domTree.documentFragment(children);
+
+    sizeElementFromChildren(fragment);
+
+    return fragment;
+};
+
+/**
+ * Makes an element placed in each of the vlist elements to ensure that each
+ * element has the same max font size. To do this, we create a zero-width space
+ * with the correct font size.
+ */
+var makeFontSizer = function(options, fontSize) {
+    var fontSizeInner = makeSpan([], [new domTree.symbolNode("\u200b")]);
+    fontSizeInner.style.fontSize = (fontSize / options.style.sizeMultiplier) + "em";
+
+    var fontSizer = makeSpan(
+        ["fontsize-ensurer", "reset-" + options.size, "size5"],
+        [fontSizeInner]);
+
+    return fontSizer;
+};
+
+/**
+ * Makes a vertical list by stacking elements and kerns on top of each other.
+ * Allows for many different ways of specifying the positioning method.
+ *
+ * Arguments:
+ *  - children: A list of child or kern nodes to be stacked on top of each other
+ *              (i.e. the first element will be at the bottom, and the last at
+ *              the top). Element nodes are specified as
+ *                {type: "elem", elem: node}
+ *              while kern nodes are specified as
+ *                {type: "kern", size: size}
+ *  - positionType: The method by which the vlist should be positioned. Valid
+ *                  values are:
+ *                   - "individualShift": The children list only contains elem
+ *                                        nodes, and each node contains an extra
+ *                                        "shift" value of how much it should be
+ *                                        shifted (note that shifting is always
+ *                                        moving downwards). positionData is
+ *                                        ignored.
+ *                   - "top": The positionData specifies the topmost point of
+ *                            the vlist (note this is expected to be a height,
+ *                            so positive values move up)
+ *                   - "bottom": The positionData specifies the bottommost point
+ *                               of the vlist (note this is expected to be a
+ *                               depth, so positive values move down
+ *                   - "shift": The vlist will be positioned such that its
+ *                              baseline is positionData away from the baseline
+ *                              of the first child. Positive values move
+ *                              downwards.
+ *                   - "firstBaseline": The vlist will be positioned such that
+ *                                      its baseline is aligned with the
+ *                                      baseline of the first child.
+ *                                      positionData is ignored. (this is
+ *                                      equivalent to "shift" with
+ *                                      positionData=0)
+ *  - positionData: Data used in different ways depending on positionType
+ *  - options: An Options object
+ *
+ */
+var makeVList = function(children, positionType, positionData, options) {
+    var depth;
+    var currPos;
+    var i;
+    if (positionType === "individualShift") {
+        var oldChildren = children;
+        children = [oldChildren[0]];
+
+        // Add in kerns to the list of children to get each element to be
+        // shifted to the correct specified shift
+        depth = -oldChildren[0].shift - oldChildren[0].elem.depth;
+        currPos = depth;
+        for (i = 1; i < oldChildren.length; i++) {
+            var diff = -oldChildren[i].shift - currPos -
+                oldChildren[i].elem.depth;
+            var size = diff -
+                (oldChildren[i - 1].elem.height +
+                 oldChildren[i - 1].elem.depth);
+
+            currPos = currPos + diff;
+
+            children.push({type: "kern", size: size});
+            children.push(oldChildren[i]);
+        }
+    } else if (positionType === "top") {
+        // We always start at the bottom, so calculate the bottom by adding up
+        // all the sizes
+        var bottom = positionData;
+        for (i = 0; i < children.length; i++) {
+            if (children[i].type === "kern") {
+                bottom -= children[i].size;
+            } else {
+                bottom -= children[i].elem.height + children[i].elem.depth;
+            }
+        }
+        depth = bottom;
+    } else if (positionType === "bottom") {
+        depth = -positionData;
+    } else if (positionType === "shift") {
+        depth = -children[0].elem.depth - positionData;
+    } else if (positionType === "firstBaseline") {
+        depth = -children[0].elem.depth;
+    } else {
+        depth = 0;
+    }
+
+    // Make the fontSizer
+    var maxFontSize = 0;
+    for (i = 0; i < children.length; i++) {
+        if (children[i].type === "elem") {
+            maxFontSize = Math.max(maxFontSize, children[i].elem.maxFontSize);
+        }
+    }
+    var fontSizer = makeFontSizer(options, maxFontSize);
+
+    // Create a new list of actual children at the correct offsets
+    var realChildren = [];
+    currPos = depth;
+    for (i = 0; i < children.length; i++) {
+        if (children[i].type === "kern") {
+            currPos += children[i].size;
+        } else {
+            var child = children[i].elem;
+
+            var shift = -child.depth - currPos;
+            currPos += child.height + child.depth;
+
+            var childWrap = makeSpan([], [fontSizer, child]);
+            childWrap.height -= shift;
+            childWrap.depth += shift;
+            childWrap.style.top = shift + "em";
+
+            realChildren.push(childWrap);
+        }
+    }
+
+    // Add in an element at the end with no offset to fix the calculation of
+    // baselines in some browsers (namely IE, sometimes safari)
+    var baselineFix = makeSpan(
+        ["baseline-fix"], [fontSizer, new domTree.symbolNode("\u200b")]);
+    realChildren.push(baselineFix);
+
+    var vlist = makeSpan(["vlist"], realChildren);
+    // Fix the final height and depth, in case there were kerns at the ends
+    // since the makeSpan calculation won't take that in to account.
+    vlist.height = Math.max(currPos, vlist.height);
+    vlist.depth = Math.max(-depth, vlist.depth);
+    return vlist;
+};
+
+// A table of size -> font size for the different sizing functions
+var sizingMultiplier = {
+    size1: 0.5,
+    size2: 0.7,
+    size3: 0.8,
+    size4: 0.9,
+    size5: 1.0,
+    size6: 1.2,
+    size7: 1.44,
+    size8: 1.73,
+    size9: 2.07,
+    size10: 2.49
+};
+
+// A map of spacing functions to their attributes, like size and corresponding
+// CSS class
+var spacingFunctions = {
+    "\\qquad": {
+        size: "2em",
+        className: "qquad"
+    },
+    "\\quad": {
+        size: "1em",
+        className: "quad"
+    },
+    "\\enspace": {
+        size: "0.5em",
+        className: "enspace"
+    },
+    "\\;": {
+        size: "0.277778em",
+        className: "thickspace"
+    },
+    "\\:": {
+        size: "0.22222em",
+        className: "mediumspace"
+    },
+    "\\,": {
+        size: "0.16667em",
+        className: "thinspace"
+    },
+    "\\!": {
+        size: "-0.16667em",
+        className: "negativethinspace"
+    }
+};
+
+var greekCapitals = [
+    "\\Gamma",
+    "\\Delta",
+    "\\Theta",
+    "\\Lambda",
+    "\\Xi",
+    "\\Pi",
+    "\\Sigma",
+    "\\Upsilon",
+    "\\Phi",
+    "\\Psi",
+    "\\Omega"
+];
+
+/**
+ * Maps TeX font commands to objects containing:
+ * - variant: string used for "mathvariant" attribute in buildMathML.js
+ * - fontName: the "style" parameter to fontMetrics.getCharacterMetrics
+ */
+// A map between tex font commands an MathML mathvariant attribute values
+var fontMap = {
+    // styles
+    "mathbf": {
+        variant: "bold",
+        fontName: "Main-Bold"
+    },
+    "mathrm": {
+        variant: "normal",
+        fontName: "Main-Regular"
+    },
+
+    // families
+    "mathbb": {
+        variant: "double-struck",
+        fontName: "AMS-Regular"
+    },
+    "mathcal": {
+        variant: "script",
+        fontName: "Caligraphic-Regular"
+    },
+    "mathfrak": {
+        variant: "fraktur",
+        fontName: "Fraktur-Regular"
+    },
+    "mathscr": {
+        variant: "script",
+        fontName: "Script-Regular"
+    },
+    "mathsf": {
+        variant: "sans-serif",
+        fontName: "SansSerif-Regular"
+    },
+    "mathtt": {
+        variant: "monospace",
+        fontName: "Typewriter-Regular"
+    }
+};
+
+module.exports = {
+    makeSymbol: makeSymbol,
+    fontMap: fontMap,
+    mathsym: mathsym,
+    makeSpan: makeSpan,
+    makeFragment: makeFragment,
+    makeVList: makeVList,
+    makeOrd: makeOrd,
+    sizingMultiplier: sizingMultiplier,
+    spacingFunctions: spacingFunctions
+};
+
+},{"./domTree":14,"./fontMetrics":16,"./symbols":21,"./utils":22}],10:[function(require,module,exports){
+/**
+ * This file does the main work of building a domTree structure from a parse
+ * tree. The entry point is the `buildHTML` function, which takes a parse tree.
+ * Then, the buildExpression, buildGroup, and various groupTypes functions are
+ * called, to produce a final HTML tree.
+ */
+
+var Options = require("./Options");
+var ParseError = require("./ParseError");
+var Style = require("./Style");
+
+var buildCommon = require("./buildCommon");
+var delimiter = require("./delimiter");
+var domTree = require("./domTree");
+var fontMetrics = require("./fontMetrics");
+var utils = require("./utils");
+
+var makeSpan = buildCommon.makeSpan;
+
+/**
+ * Take a list of nodes, build them in order, and return a list of the built
+ * nodes. This function handles the `prev` node correctly, and passes the
+ * previous element from the list as the prev of the next element.
+ */
+var buildExpression = function(expression, options, prev) {
+    var groups = [];
+    for (var i = 0; i < expression.length; i++) {
+        var group = expression[i];
+        groups.push(buildGroup(group, options, prev));
+        prev = group;
+    }
+    return groups;
+};
+
+// List of types used by getTypeOfGroup
+var groupToType = {
+    mathord: "mord",
+    textord: "mord",
+    bin: "mbin",
+    rel: "mrel",
+    text: "mord",
+    open: "mopen",
+    close: "mclose",
+    inner: "minner",
+    genfrac: "mord",
+    array: "minner",
+    spacing: "mord",
+    punct: "mpunct",
+    ordgroup: "mord",
+    op: "mop",
+    katex: "mord",
+    overline: "mord",
+    rule: "mord",
+    leftright: "minner",
+    sqrt: "mord",
+    accent: "mord"
+};
+
+/**
+ * Gets the final math type of an expression, given its group type. This type is
+ * used to determine spacing between elements, and affects bin elements by
+ * causing them to change depending on what types are around them. This type
+ * must be attached to the outermost node of an element as a CSS class so that
+ * spacing with its surrounding elements works correctly.
+ *
+ * Some elements can be mapped one-to-one from group type to math type, and
+ * those are listed in the `groupToType` table.
+ *
+ * Others (usually elements that wrap around other elements) often have
+ * recursive definitions, and thus call `getTypeOfGroup` on their inner
+ * elements.
+ */
+var getTypeOfGroup = function(group) {
+    if (group == null) {
+        // Like when typesetting $^3$
+        return groupToType.mathord;
+    } else if (group.type === "supsub") {
+        return getTypeOfGroup(group.value.base);
+    } else if (group.type === "llap" || group.type === "rlap") {
+        return getTypeOfGroup(group.value);
+    } else if (group.type === "color") {
+        return getTypeOfGroup(group.value.value);
+    } else if (group.type === "sizing") {
+        return getTypeOfGroup(group.value.value);
+    } else if (group.type === "styling") {
+        return getTypeOfGroup(group.value.value);
+    } else if (group.type === "delimsizing") {
+        return groupToType[group.value.delimType];
+    } else {
+        return groupToType[group.type];
+    }
+};
+
+/**
+ * Sometimes, groups perform special rules when they have superscripts or
+ * subscripts attached to them. This function lets the `supsub` group know that
+ * its inner element should handle the superscripts and subscripts instead of
+ * handling them itself.
+ */
+var shouldHandleSupSub = function(group, options) {
+    if (!group) {
+        return false;
+    } else if (group.type === "op") {
+        // Operators handle supsubs differently when they have limits
+        // (e.g. `\displaystyle\sum_2^3`)
+        return group.value.limits && options.style.size === Style.DISPLAY.size;
+    } else if (group.type === "accent") {
+        return isCharacterBox(group.value.base);
+    } else {
+        return null;
+    }
+};
+
+/**
+ * Sometimes we want to pull out the innermost element of a group. In most
+ * cases, this will just be the group itself, but when ordgroups and colors have
+ * a single element, we want to pull that out.
+ */
+var getBaseElem = function(group) {
+    if (!group) {
+        return false;
+    } else if (group.type === "ordgroup") {
+        if (group.value.length === 1) {
+            return getBaseElem(group.value[0]);
+        } else {
+            return group;
+        }
+    } else if (group.type === "color") {
+        if (group.value.value.length === 1) {
+            return getBaseElem(group.value.value[0]);
+        } else {
+            return group;
+        }
+    } else {
+        return group;
+    }
+};
+
+/**
+ * TeXbook algorithms often reference "character boxes", which are simply groups
+ * with a single character in them. To decide if something is a character box,
+ * we find its innermost group, and see if it is a single character.
+ */
+var isCharacterBox = function(group) {
+    var baseElem = getBaseElem(group);
+
+    // These are all they types of groups which hold single characters
+    return baseElem.type === "mathord" ||
+        baseElem.type === "textord" ||
+        baseElem.type === "bin" ||
+        baseElem.type === "rel" ||
+        baseElem.type === "inner" ||
+        baseElem.type === "open" ||
+        baseElem.type === "close" ||
+        baseElem.type === "punct";
+};
+
+var makeNullDelimiter = function(options) {
+    return makeSpan([
+        "sizing", "reset-" + options.size, "size5",
+        options.style.reset(), Style.TEXT.cls(),
+        "nulldelimiter"
+    ]);
+};
+
+/**
+ * This is a map of group types to the function used to handle that type.
+ * Simpler types come at the beginning, while complicated types come afterwards.
+ */
+var groupTypes = {
+    mathord: function(group, options, prev) {
+        return buildCommon.makeOrd(group, options, "mathord");
+    },
+
+    textord: function(group, options, prev) {
+        return buildCommon.makeOrd(group, options, "textord");
+    },
+
+    bin: function(group, options, prev) {
+        var className = "mbin";
+        // Pull out the most recent element. Do some special handling to find
+        // things at the end of a \color group. Note that we don't use the same
+        // logic for ordgroups (which count as ords).
+        var prevAtom = prev;
+        while (prevAtom && prevAtom.type === "color") {
+            var atoms = prevAtom.value.value;
+            prevAtom = atoms[atoms.length - 1];
+        }
+        // See TeXbook pg. 442-446, Rules 5 and 6, and the text before Rule 19.
+        // Here, we determine whether the bin should turn into an ord. We
+        // currently only apply Rule 5.
+        if (!prev || utils.contains(["mbin", "mopen", "mrel", "mop", "mpunct"],
+                getTypeOfGroup(prevAtom))) {
+            group.type = "textord";
+            className = "mord";
+        }
+
+        return buildCommon.mathsym(
+            group.value, group.mode, options.getColor(), [className]);
+    },
+
+    rel: function(group, options, prev) {
+        return buildCommon.mathsym(
+            group.value, group.mode, options.getColor(), ["mrel"]);
+    },
+
+    open: function(group, options, prev) {
+        return buildCommon.mathsym(
+            group.value, group.mode, options.getColor(), ["mopen"]);
+    },
+
+    close: function(group, options, prev) {
+        return buildCommon.mathsym(
+            group.value, group.mode, options.getColor(), ["mclose"]);
+    },
+
+    inner: function(group, options, prev) {
+        return buildCommon.mathsym(
+            group.value, group.mode, options.getColor(), ["minner"]);
+    },
+
+    punct: function(group, options, prev) {
+        return buildCommon.mathsym(
+            group.value, group.mode, options.getColor(), ["mpunct"]);
+    },
+
+    ordgroup: function(group, options, prev) {
+        return makeSpan(
+            ["mord", options.style.cls()],
+            buildExpression(group.value, options.reset())
+        );
+    },
+
+    text: function(group, options, prev) {
+        return makeSpan(["text", "mord", options.style.cls()],
+            buildExpression(group.value.body, options.reset()));
+    },
+
+    color: function(group, options, prev) {
+        var elements = buildExpression(
+            group.value.value,
+            options.withColor(group.value.color),
+            prev
+        );
+
+        // \color isn't supposed to affect the type of the elements it contains.
+        // To accomplish this, we wrap the results in a fragment, so the inner
+        // elements will be able to directly interact with their neighbors. For
+        // example, `\color{red}{2 +} 3` has the same spacing as `2 + 3`
+        return new buildCommon.makeFragment(elements);
+    },
+
+    supsub: function(group, options, prev) {
+        // Superscript and subscripts are handled in the TeXbook on page
+        // 445-446, rules 18(a-f).
+
+        // Here is where we defer to the inner group if it should handle
+        // superscripts and subscripts itself.
+        if (shouldHandleSupSub(group.value.base, options)) {
+            return groupTypes[group.value.base.type](group, options, prev);
+        }
+
+        var base = buildGroup(group.value.base, options.reset());
+        var supmid, submid, sup, sub;
+
+        if (group.value.sup) {
+            sup = buildGroup(group.value.sup,
+                    options.withStyle(options.style.sup()));
+            supmid = makeSpan(
+                    [options.style.reset(), options.style.sup().cls()], [sup]);
+        }
+
+        if (group.value.sub) {
+            sub = buildGroup(group.value.sub,
+                    options.withStyle(options.style.sub()));
+            submid = makeSpan(
+                    [options.style.reset(), options.style.sub().cls()], [sub]);
+        }
+
+        // Rule 18a
+        var supShift, subShift;
+        if (isCharacterBox(group.value.base)) {
+            supShift = 0;
+            subShift = 0;
+        } else {
+            supShift = base.height - fontMetrics.metrics.supDrop;
+            subShift = base.depth + fontMetrics.metrics.subDrop;
+        }
+
+        // Rule 18c
+        var minSupShift;
+        if (options.style === Style.DISPLAY) {
+            minSupShift = fontMetrics.metrics.sup1;
+        } else if (options.style.cramped) {
+            minSupShift = fontMetrics.metrics.sup3;
+        } else {
+            minSupShift = fontMetrics.metrics.sup2;
+        }
+
+        // scriptspace is a font-size-independent size, so scale it
+        // appropriately
+        var multiplier = Style.TEXT.sizeMultiplier *
+                options.style.sizeMultiplier;
+        var scriptspace =
+            (0.5 / fontMetrics.metrics.ptPerEm) / multiplier + "em";
+
+        var supsub;
+        if (!group.value.sup) {
+            // Rule 18b
+            subShift = Math.max(
+                subShift, fontMetrics.metrics.sub1,
+                sub.height - 0.8 * fontMetrics.metrics.xHeight);
+
+            supsub = buildCommon.makeVList([
+                {type: "elem", elem: submid}
+            ], "shift", subShift, options);
+
+            supsub.children[0].style.marginRight = scriptspace;
+
+            // Subscripts shouldn't be shifted by the base's italic correction.
+            // Account for that by shifting the subscript back the appropriate
+            // amount. Note we only do this when the base is a single symbol.
+            if (base instanceof domTree.symbolNode) {
+                supsub.children[0].style.marginLeft = -base.italic + "em";
+            }
+        } else if (!group.value.sub) {
+            // Rule 18c, d
+            supShift = Math.max(supShift, minSupShift,
+                sup.depth + 0.25 * fontMetrics.metrics.xHeight);
+
+            supsub = buildCommon.makeVList([
+                {type: "elem", elem: supmid}
+            ], "shift", -supShift, options);
+
+            supsub.children[0].style.marginRight = scriptspace;
+        } else {
+            supShift = Math.max(
+                supShift, minSupShift,
+                sup.depth + 0.25 * fontMetrics.metrics.xHeight);
+            subShift = Math.max(subShift, fontMetrics.metrics.sub2);
+
+            var ruleWidth = fontMetrics.metrics.defaultRuleThickness;
+
+            // Rule 18e
+            if ((supShift - sup.depth) - (sub.height - subShift) <
+                    4 * ruleWidth) {
+                subShift = 4 * ruleWidth - (supShift - sup.depth) + sub.height;
+                var psi = 0.8 * fontMetrics.metrics.xHeight -
+                    (supShift - sup.depth);
+                if (psi > 0) {
+                    supShift += psi;
+                    subShift -= psi;
+                }
+            }
+
+            supsub = buildCommon.makeVList([
+                {type: "elem", elem: submid, shift: subShift},
+                {type: "elem", elem: supmid, shift: -supShift}
+            ], "individualShift", null, options);
+
+            // See comment above about subscripts not being shifted
+            if (base instanceof domTree.symbolNode) {
+                supsub.children[0].style.marginLeft = -base.italic + "em";
+            }
+
+            supsub.children[0].style.marginRight = scriptspace;
+            supsub.children[1].style.marginRight = scriptspace;
+        }
+
+        return makeSpan([getTypeOfGroup(group.value.base)],
+            [base, supsub]);
+    },
+
+    genfrac: function(group, options, prev) {
+        // Fractions are handled in the TeXbook on pages 444-445, rules 15(a-e).
+        // Figure out what style this fraction should be in based on the
+        // function used
+        var fstyle = options.style;
+        if (group.value.size === "display") {
+            fstyle = Style.DISPLAY;
+        } else if (group.value.size === "text") {
+            fstyle = Style.TEXT;
+        }
+
+        var nstyle = fstyle.fracNum();
+        var dstyle = fstyle.fracDen();
+
+        var numer = buildGroup(group.value.numer, options.withStyle(nstyle));
+        var numerreset = makeSpan([fstyle.reset(), nstyle.cls()], [numer]);
+
+        var denom = buildGroup(group.value.denom, options.withStyle(dstyle));
+        var denomreset = makeSpan([fstyle.reset(), dstyle.cls()], [denom]);
+
+        var ruleWidth;
+        if (group.value.hasBarLine) {
+            ruleWidth = fontMetrics.metrics.defaultRuleThickness /
+                options.style.sizeMultiplier;
+        } else {
+            ruleWidth = 0;
+        }
+
+        // Rule 15b
+        var numShift;
+        var clearance;
+        var denomShift;
+        if (fstyle.size === Style.DISPLAY.size) {
+            numShift = fontMetrics.metrics.num1;
+            if (ruleWidth > 0) {
+                clearance = 3 * ruleWidth;
+            } else {
+                clearance = 7 * fontMetrics.metrics.defaultRuleThickness;
+            }
+            denomShift = fontMetrics.metrics.denom1;
+        } else {
+            if (ruleWidth > 0) {
+                numShift = fontMetrics.metrics.num2;
+                clearance = ruleWidth;
+            } else {
+                numShift = fontMetrics.metrics.num3;
+                clearance = 3 * fontMetrics.metrics.defaultRuleThickness;
+            }
+            denomShift = fontMetrics.metrics.denom2;
+        }
+
+        var frac;
+        if (ruleWidth === 0) {
+            // Rule 15c
+            var candiateClearance =
+                (numShift - numer.depth) - (denom.height - denomShift);
+            if (candiateClearance < clearance) {
+                numShift += 0.5 * (clearance - candiateClearance);
+                denomShift += 0.5 * (clearance - candiateClearance);
+            }
+
+            frac = buildCommon.makeVList([
+                {type: "elem", elem: denomreset, shift: denomShift},
+                {type: "elem", elem: numerreset, shift: -numShift}
+            ], "individualShift", null, options);
+        } else {
+            // Rule 15d
+            var axisHeight = fontMetrics.metrics.axisHeight;
+
+            if ((numShift - numer.depth) - (axisHeight + 0.5 * ruleWidth) <
+                    clearance) {
+                numShift +=
+                    clearance - ((numShift - numer.depth) -
+                                 (axisHeight + 0.5 * ruleWidth));
+            }
+
+            if ((axisHeight - 0.5 * ruleWidth) - (denom.height - denomShift) <
+                    clearance) {
+                denomShift +=
+                    clearance - ((axisHeight - 0.5 * ruleWidth) -
+                                 (denom.height - denomShift));
+            }
+
+            var mid = makeSpan(
+                [options.style.reset(), Style.TEXT.cls(), "frac-line"]);
+            // Manually set the height of the line because its height is
+            // created in CSS
+            mid.height = ruleWidth;
+
+            var midShift = -(axisHeight - 0.5 * ruleWidth);
+
+            frac = buildCommon.makeVList([
+                {type: "elem", elem: denomreset, shift: denomShift},
+                {type: "elem", elem: mid,        shift: midShift},
+                {type: "elem", elem: numerreset, shift: -numShift}
+            ], "individualShift", null, options);
+        }
+
+        // Since we manually change the style sometimes (with \dfrac or \tfrac),
+        // account for the possible size change here.
+        frac.height *= fstyle.sizeMultiplier / options.style.sizeMultiplier;
+        frac.depth *= fstyle.sizeMultiplier / options.style.sizeMultiplier;
+
+        // Rule 15e
+        var delimSize;
+        if (fstyle.size === Style.DISPLAY.size) {
+            delimSize = fontMetrics.metrics.delim1;
+        } else {
+            delimSize = fontMetrics.metrics.getDelim2(fstyle);
+        }
+
+        var leftDelim, rightDelim;
+        if (group.value.leftDelim == null) {
+            leftDelim = makeNullDelimiter(options);
+        } else {
+            leftDelim = delimiter.customSizedDelim(
+                group.value.leftDelim, delimSize, true,
+                options.withStyle(fstyle), group.mode);
+        }
+        if (group.value.rightDelim == null) {
+            rightDelim = makeNullDelimiter(options);
+        } else {
+            rightDelim = delimiter.customSizedDelim(
+                group.value.rightDelim, delimSize, true,
+                options.withStyle(fstyle), group.mode);
+        }
+
+        return makeSpan(
+            ["mord", options.style.reset(), fstyle.cls()],
+            [leftDelim, makeSpan(["mfrac"], [frac]), rightDelim],
+            options.getColor());
+    },
+
+    array: function(group, options, prev) {
+        var r, c;
+        var nr = group.value.body.length;
+        var nc = 0;
+        var body = new Array(nr);
+
+        // Horizontal spacing
+        var pt = 1 / fontMetrics.metrics.ptPerEm;
+        var arraycolsep = 5 * pt; // \arraycolsep in article.cls
+
+        // Vertical spacing
+        var baselineskip = 12 * pt; // see size10.clo
+        // Default \arraystretch from lttab.dtx
+        // TODO(gagern): may get redefined once we have user-defined macros
+        var arraystretch = utils.deflt(group.value.arraystretch, 1);
+        var arrayskip = arraystretch * baselineskip;
+        var arstrutHeight = 0.7 * arrayskip; // \strutbox in ltfsstrc.dtx and
+        var arstrutDepth = 0.3 * arrayskip;  // \@arstrutbox in lttab.dtx
+
+        var totalHeight = 0;
+        for (r = 0; r < group.value.body.length; ++r) {
+            var inrow = group.value.body[r];
+            var height = arstrutHeight; // \@array adds an \@arstrut
+            var depth = arstrutDepth;   // to each tow (via the template)
+            if (nc < inrow.length) {
+                nc = inrow.length;
+            }
+            var outrow = new Array(inrow.length);
+            for (c = 0; c < inrow.length; ++c) {
+                var elt = buildGroup(inrow[c], options);
+                if (depth < elt.depth) {
+                    depth = elt.depth;
+                }
+                if (height < elt.height) {
+                    height = elt.height;
+                }
+                outrow[c] = elt;
+            }
+            var gap = 0;
+            if (group.value.rowGaps[r]) {
+                gap = group.value.rowGaps[r].value;
+                switch (gap.unit) {
+                case "em":
+                    gap = gap.number;
+                    break;
+                case "ex":
+                    gap = gap.number * fontMetrics.metrics.emPerEx;
+                    break;
+                default:
+                    console.error("Can't handle unit " + gap.unit);
+                    gap = 0;
+                }
+                if (gap > 0) { // \@argarraycr
+                    gap += arstrutDepth;
+                    if (depth < gap) {
+                        depth = gap; // \@xargarraycr
+                    }
+                    gap = 0;
+                }
+            }
+            outrow.height = height;
+            outrow.depth = depth;
+            totalHeight += height;
+            outrow.pos = totalHeight;
+            totalHeight += depth + gap; // \@yargarraycr
+            body[r] = outrow;
+        }
+        var offset = totalHeight / 2 + fontMetrics.metrics.axisHeight;
+        var coldescriptions = group.value.cols || [];
+        var cols = [];
+        var colsep;
+        for (c = 0; c < nc; ++c) {
+            var coldescr = coldescriptions[c] || {};
+            var sepwidth;
+            if (c > 0 || group.value.hskipBeforeAndAfter) {
+                sepwidth = utils.deflt(coldescr.pregap, arraycolsep);
+                if (sepwidth !== 0) {
+                    colsep = makeSpan(["arraycolsep"], []);
+                    colsep.style.width = sepwidth + "em";
+                    cols.push(colsep);
+                }
+            }
+            var col = [];
+            for (r = 0; r < nr; ++r) {
+                var row = body[r];
+                var elem = row[c];
+                if (!elem) {
+                    continue;
+                }
+                var shift = row.pos - offset;
+                elem.depth = row.depth;
+                elem.height = row.height;
+                col.push({type: "elem", elem: elem, shift: shift});
+            }
+            col = buildCommon.makeVList(col, "individualShift", null, options);
+            col = makeSpan(
+                ["col-align-" + (coldescr.align || "c")],
+                [col]);
+            cols.push(col);
+            if (c < nc - 1 || group.value.hskipBeforeAndAfter) {
+                sepwidth = utils.deflt(coldescr.postgap, arraycolsep);
+                if (sepwidth !== 0) {
+                    colsep = makeSpan(["arraycolsep"], []);
+                    colsep.style.width = sepwidth + "em";
+                    cols.push(colsep);
+                }
+            }
+        }
+        body = makeSpan(["mtable"], cols);
+        return makeSpan(["minner"], [body], options.getColor());
+    },
+
+    spacing: function(group, options, prev) {
+        if (group.value === "\\ " || group.value === "\\space" ||
+            group.value === " " || group.value === "~") {
+            // Spaces are generated by adding an actual space. Each of these
+            // things has an entry in the symbols table, so these will be turned
+            // into appropriate outputs.
+            return makeSpan(
+                ["mord", "mspace"],
+                [buildCommon.mathsym(group.value, group.mode)]
+            );
+        } else {
+            // Other kinds of spaces are of arbitrary width. We use CSS to
+            // generate these.
+            return makeSpan(
+                ["mord", "mspace",
+                 buildCommon.spacingFunctions[group.value].className]);
+        }
+    },
+
+    llap: function(group, options, prev) {
+        var inner = makeSpan(
+            ["inner"], [buildGroup(group.value.body, options.reset())]);
+        var fix = makeSpan(["fix"], []);
+        return makeSpan(
+            ["llap", options.style.cls()], [inner, fix]);
+    },
+
+    rlap: function(group, options, prev) {
+        var inner = makeSpan(
+            ["inner"], [buildGroup(group.value.body, options.reset())]);
+        var fix = makeSpan(["fix"], []);
+        return makeSpan(
+            ["rlap", options.style.cls()], [inner, fix]);
+    },
+
+    op: function(group, options, prev) {
+        // Operators are handled in the TeXbook pg. 443-444, rule 13(a).
+        var supGroup;
+        var subGroup;
+        var hasLimits = false;
+        if (group.type === "supsub" ) {
+            // If we have limits, supsub will pass us its group to handle. Pull
+            // out the superscript and subscript and set the group to the op in
+            // its base.
+            supGroup = group.value.sup;
+            subGroup = group.value.sub;
+            group = group.value.base;
+            hasLimits = true;
+        }
+
+        // Most operators have a large successor symbol, but these don't.
+        var noSuccessor = [
+            "\\smallint"
+        ];
+
+        var large = false;
+        if (options.style.size === Style.DISPLAY.size &&
+            group.value.symbol &&
+            !utils.contains(noSuccessor, group.value.body)) {
+
+            // Most symbol operators get larger in displaystyle (rule 13)
+            large = true;
+        }
+
+        var base;
+        var baseShift = 0;
+        var slant = 0;
+        if (group.value.symbol) {
+            // If this is a symbol, create the symbol.
+            var style = large ? "Size2-Regular" : "Size1-Regular";
+            base = buildCommon.makeSymbol(
+                group.value.body, style, "math", options.getColor(),
+                ["op-symbol", large ? "large-op" : "small-op", "mop"]);
+
+            // Shift the symbol so its center lies on the axis (rule 13). It
+            // appears that our fonts have the centers of the symbols already
+            // almost on the axis, so these numbers are very small. Note we
+            // don't actually apply this here, but instead it is used either in
+            // the vlist creation or separately when there are no limits.
+            baseShift = (base.height - base.depth) / 2 -
+                fontMetrics.metrics.axisHeight *
+                options.style.sizeMultiplier;
+
+            // The slant of the symbol is just its italic correction.
+            slant = base.italic;
+        } else {
+            // Otherwise, this is a text operator. Build the text from the
+            // operator's name.
+            // TODO(emily): Add a space in the middle of some of these
+            // operators, like \limsup
+            var output = [];
+            for (var i = 1; i < group.value.body.length; i++) {
+                output.push(buildCommon.mathsym(group.value.body[i], group.mode));
+            }
+            base = makeSpan(["mop"], output, options.getColor());
+        }
+
+        if (hasLimits) {
+            // IE 8 clips \int if it is in a display: inline-block. We wrap it
+            // in a new span so it is an inline, and works.
+            base = makeSpan([], [base]);
+
+            var supmid, supKern, submid, subKern;
+            // We manually have to handle the superscripts and subscripts. This,
+            // aside from the kern calculations, is copied from supsub.
+            if (supGroup) {
+                var sup = buildGroup(
+                    supGroup, options.withStyle(options.style.sup()));
+                supmid = makeSpan(
+                    [options.style.reset(), options.style.sup().cls()], [sup]);
+
+                supKern = Math.max(
+                    fontMetrics.metrics.bigOpSpacing1,
+                    fontMetrics.metrics.bigOpSpacing3 - sup.depth);
+            }
+
+            if (subGroup) {
+                var sub = buildGroup(
+                    subGroup, options.withStyle(options.style.sub()));
+                submid = makeSpan(
+                    [options.style.reset(), options.style.sub().cls()],
+                    [sub]);
+
+                subKern = Math.max(
+                    fontMetrics.metrics.bigOpSpacing2,
+                    fontMetrics.metrics.bigOpSpacing4 - sub.height);
+            }
+
+            // Build the final group as a vlist of the possible subscript, base,
+            // and possible superscript.
+            var finalGroup, top, bottom;
+            if (!supGroup) {
+                top = base.height - baseShift;
+
+                finalGroup = buildCommon.makeVList([
+                    {type: "kern", size: fontMetrics.metrics.bigOpSpacing5},
+                    {type: "elem", elem: submid},
+                    {type: "kern", size: subKern},
+                    {type: "elem", elem: base}
+                ], "top", top, options);
+
+                // Here, we shift the limits by the slant of the symbol. Note
+                // that we are supposed to shift the limits by 1/2 of the slant,
+                // but since we are centering the limits adding a full slant of
+                // margin will shift by 1/2 that.
+                finalGroup.children[0].style.marginLeft = -slant + "em";
+            } else if (!subGroup) {
+                bottom = base.depth + baseShift;
+
+                finalGroup = buildCommon.makeVList([
+                    {type: "elem", elem: base},
+                    {type: "kern", size: supKern},
+                    {type: "elem", elem: supmid},
+                    {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}
+                ], "bottom", bottom, options);
+
+                // See comment above about slants
+                finalGroup.children[1].style.marginLeft = slant + "em";
+            } else if (!supGroup && !subGroup) {
+                // This case probably shouldn't occur (this would mean the
+                // supsub was sending us a group with no superscript or
+                // subscript) but be safe.
+                return base;
+            } else {
+                bottom = fontMetrics.metrics.bigOpSpacing5 +
+                    submid.height + submid.depth +
+                    subKern +
+                    base.depth + baseShift;
+
+                finalGroup = buildCommon.makeVList([
+                    {type: "kern", size: fontMetrics.metrics.bigOpSpacing5},
+                    {type: "elem", elem: submid},
+                    {type: "kern", size: subKern},
+                    {type: "elem", elem: base},
+                    {type: "kern", size: supKern},
+                    {type: "elem", elem: supmid},
+                    {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}
+                ], "bottom", bottom, options);
+
+                // See comment above about slants
+                finalGroup.children[0].style.marginLeft = -slant + "em";
+                finalGroup.children[2].style.marginLeft = slant + "em";
+            }
+
+            return makeSpan(["mop", "op-limits"], [finalGroup]);
+        } else {
+            if (group.value.symbol) {
+                base.style.top = baseShift + "em";
+            }
+
+            return base;
+        }
+    },
+
+    katex: function(group, options, prev) {
+        // The KaTeX logo. The offsets for the K and a were chosen to look
+        // good, but the offsets for the T, E, and X were taken from the
+        // definition of \TeX in TeX (see TeXbook pg. 356)
+        var k = makeSpan(
+            ["k"], [buildCommon.mathsym("K", group.mode)]);
+        var a = makeSpan(
+            ["a"], [buildCommon.mathsym("A", group.mode)]);
+
+        a.height = (a.height + 0.2) * 0.75;
+        a.depth = (a.height - 0.2) * 0.75;
+
+        var t = makeSpan(
+            ["t"], [buildCommon.mathsym("T", group.mode)]);
+        var e = makeSpan(
+            ["e"], [buildCommon.mathsym("E", group.mode)]);
+
+        e.height = (e.height - 0.2155);
+        e.depth = (e.depth + 0.2155);
+
+        var x = makeSpan(
+            ["x"], [buildCommon.mathsym("X", group.mode)]);
+
+        return makeSpan(
+            ["katex-logo"], [k, a, t, e, x], options.getColor());
+    },
+
+    overline: function(group, options, prev) {
+        // Overlines are handled in the TeXbook pg 443, Rule 9.
+
+        // Build the inner group in the cramped style.
+        var innerGroup = buildGroup(group.value.body,
+                options.withStyle(options.style.cramp()));
+
+        var ruleWidth = fontMetrics.metrics.defaultRuleThickness /
+            options.style.sizeMultiplier;
+
+        // Create the line above the body
+        var line = makeSpan(
+            [options.style.reset(), Style.TEXT.cls(), "overline-line"]);
+        line.height = ruleWidth;
+        line.maxFontSize = 1.0;
+
+        // Generate the vlist, with the appropriate kerns
+        var vlist = buildCommon.makeVList([
+            {type: "elem", elem: innerGroup},
+            {type: "kern", size: 3 * ruleWidth},
+            {type: "elem", elem: line},
+            {type: "kern", size: ruleWidth}
+        ], "firstBaseline", null, options);
+
+        return makeSpan(["overline", "mord"], [vlist], options.getColor());
+    },
+
+    sqrt: function(group, options, prev) {
+        // Square roots are handled in the TeXbook pg. 443, Rule 11.
+
+        // First, we do the same steps as in overline to build the inner group
+        // and line
+        var inner = buildGroup(group.value.body,
+                options.withStyle(options.style.cramp()));
+
+        var ruleWidth = fontMetrics.metrics.defaultRuleThickness /
+            options.style.sizeMultiplier;
+
+        var line = makeSpan(
+            [options.style.reset(), Style.TEXT.cls(), "sqrt-line"], [],
+            options.getColor());
+        line.height = ruleWidth;
+        line.maxFontSize = 1.0;
+
+        var phi = ruleWidth;
+        if (options.style.id < Style.TEXT.id) {
+            phi = fontMetrics.metrics.xHeight;
+        }
+
+        // Calculate the clearance between the body and line
+        var lineClearance = ruleWidth + phi / 4;
+
+        var innerHeight =
+            (inner.height + inner.depth) * options.style.sizeMultiplier;
+        var minDelimiterHeight = innerHeight + lineClearance + ruleWidth;
+
+        // Create a \surd delimiter of the required minimum size
+        var delim = makeSpan(["sqrt-sign"], [
+            delimiter.customSizedDelim("\\surd", minDelimiterHeight,
+                                       false, options, group.mode)],
+                             options.getColor());
+
+        var delimDepth = (delim.height + delim.depth) - ruleWidth;
+
+        // Adjust the clearance based on the delimiter size
+        if (delimDepth > inner.height + inner.depth + lineClearance) {
+            lineClearance =
+                (lineClearance + delimDepth - inner.height - inner.depth) / 2;
+        }
+
+        // Shift the delimiter so that its top lines up with the top of the line
+        var delimShift = -(inner.height + lineClearance + ruleWidth) + delim.height;
+        delim.style.top = delimShift + "em";
+        delim.height -= delimShift;
+        delim.depth += delimShift;
+
+        // We add a special case here, because even when `inner` is empty, we
+        // still get a line. So, we use a simple heuristic to decide if we
+        // should omit the body entirely. (note this doesn't work for something
+        // like `\sqrt{\rlap{x}}`, but if someone is doing that they deserve for
+        // it not to work.
+        var body;
+        if (inner.height === 0 && inner.depth === 0) {
+            body = makeSpan();
+        } else {
+            body = buildCommon.makeVList([
+                {type: "elem", elem: inner},
+                {type: "kern", size: lineClearance},
+                {type: "elem", elem: line},
+                {type: "kern", size: ruleWidth}
+            ], "firstBaseline", null, options);
+        }
+
+        if (!group.value.index) {
+            return makeSpan(["sqrt", "mord"], [delim, body]);
+        } else {
+            // Handle the optional root index
+
+            // The index is always in scriptscript style
+            var root = buildGroup(
+                group.value.index,
+                options.withStyle(Style.SCRIPTSCRIPT));
+            var rootWrap = makeSpan(
+                [options.style.reset(), Style.SCRIPTSCRIPT.cls()],
+                [root]);
+
+            // Figure out the height and depth of the inner part
+            var innerRootHeight = Math.max(delim.height, body.height);
+            var innerRootDepth = Math.max(delim.depth, body.depth);
+
+            // The amount the index is shifted by. This is taken from the TeX
+            // source, in the definition of `\r@@t`.
+            var toShift = 0.6 * (innerRootHeight - innerRootDepth);
+
+            // Build a VList with the superscript shifted up correctly
+            var rootVList = buildCommon.makeVList(
+                [{type: "elem", elem: rootWrap}],
+                "shift", -toShift, options);
+            // Add a class surrounding it so we can add on the appropriate
+            // kerning
+            var rootVListWrap = makeSpan(["root"], [rootVList]);
+
+            return makeSpan(["sqrt", "mord"], [rootVListWrap, delim, body]);
+        }
+    },
+
+    sizing: function(group, options, prev) {
+        // Handle sizing operators like \Huge. Real TeX doesn't actually allow
+        // these functions inside of math expressions, so we do some special
+        // handling.
+        var inner = buildExpression(group.value.value,
+                options.withSize(group.value.size), prev);
+
+        var span = makeSpan(["mord"],
+            [makeSpan(["sizing", "reset-" + options.size, group.value.size,
+                       options.style.cls()],
+                      inner)]);
+
+        // Calculate the correct maxFontSize manually
+        var fontSize = buildCommon.sizingMultiplier[group.value.size];
+        span.maxFontSize = fontSize * options.style.sizeMultiplier;
+
+        return span;
+    },
+
+    styling: function(group, options, prev) {
+        // Style changes are handled in the TeXbook on pg. 442, Rule 3.
+
+        // Figure out what style we're changing to.
+        var style = {
+            "display": Style.DISPLAY,
+            "text": Style.TEXT,
+            "script": Style.SCRIPT,
+            "scriptscript": Style.SCRIPTSCRIPT
+        };
+
+        var newStyle = style[group.value.style];
+
+        // Build the inner expression in the new style.
+        var inner = buildExpression(
+            group.value.value, options.withStyle(newStyle), prev);
+
+        return makeSpan([options.style.reset(), newStyle.cls()], inner);
+    },
+
+    font: function(group, options, prev) {
+        var font = group.value.font;
+        return buildGroup(group.value.body, options.withFont(font), prev);
+    },
+
+    delimsizing: function(group, options, prev) {
+        var delim = group.value.value;
+
+        if (delim === ".") {
+            // Empty delimiters still count as elements, even though they don't
+            // show anything.
+            return makeSpan([groupToType[group.value.delimType]]);
+        }
+
+        // Use delimiter.sizedDelim to generate the delimiter.
+        return makeSpan(
+            [groupToType[group.value.delimType]],
+            [delimiter.sizedDelim(
+                delim, group.value.size, options, group.mode)]);
+    },
+
+    leftright: function(group, options, prev) {
+        // Build the inner expression
+        var inner = buildExpression(group.value.body, options.reset());
+
+        var innerHeight = 0;
+        var innerDepth = 0;
+
+        // Calculate its height and depth
+        for (var i = 0; i < inner.length; i++) {
+            innerHeight = Math.max(inner[i].height, innerHeight);
+            innerDepth = Math.max(inner[i].depth, innerDepth);
+        }
+
+        // The size of delimiters is the same, regardless of what style we are
+        // in. Thus, to correctly calculate the size of delimiter we need around
+        // a group, we scale down the inner size based on the size.
+        innerHeight *= options.style.sizeMultiplier;
+        innerDepth *= options.style.sizeMultiplier;
+
+        var leftDelim;
+        if (group.value.left === ".") {
+            // Empty delimiters in \left and \right make null delimiter spaces.
+            leftDelim = makeNullDelimiter(options);
+        } else {
+            // Otherwise, use leftRightDelim to generate the correct sized
+            // delimiter.
+            leftDelim = delimiter.leftRightDelim(
+                group.value.left, innerHeight, innerDepth, options,
+                group.mode);
+        }
+        // Add it to the beginning of the expression
+        inner.unshift(leftDelim);
+
+        var rightDelim;
+        // Same for the right delimiter
+        if (group.value.right === ".") {
+            rightDelim = makeNullDelimiter(options);
+        } else {
+            rightDelim = delimiter.leftRightDelim(
+                group.value.right, innerHeight, innerDepth, options,
+                group.mode);
+        }
+        // Add it to the end of the expression.
+        inner.push(rightDelim);
+
+        return makeSpan(
+            ["minner", options.style.cls()], inner, options.getColor());
+    },
+
+    rule: function(group, options, prev) {
+        // Make an empty span for the rule
+        var rule = makeSpan(["mord", "rule"], [], options.getColor());
+
+        // Calculate the shift, width, and height of the rule, and account for units
+        var shift = 0;
+        if (group.value.shift) {
+            shift = group.value.shift.number;
+            if (group.value.shift.unit === "ex") {
+                shift *= fontMetrics.metrics.xHeight;
+            }
+        }
+
+        var width = group.value.width.number;
+        if (group.value.width.unit === "ex") {
+            width *= fontMetrics.metrics.xHeight;
+        }
+
+        var height = group.value.height.number;
+        if (group.value.height.unit === "ex") {
+            height *= fontMetrics.metrics.xHeight;
+        }
+
+        // The sizes of rules are absolute, so make it larger if we are in a
+        // smaller style.
+        shift /= options.style.sizeMultiplier;
+        width /= options.style.sizeMultiplier;
+        height /= options.style.sizeMultiplier;
+
+        // Style the rule to the right size
+        rule.style.borderRightWidth = width + "em";
+        rule.style.borderTopWidth = height + "em";
+        rule.style.bottom = shift + "em";
+
+        // Record the height and width
+        rule.width = width;
+        rule.height = height + shift;
+        rule.depth = -shift;
+
+        return rule;
+    },
+
+    accent: function(group, options, prev) {
+        // Accents are handled in the TeXbook pg. 443, rule 12.
+        var base = group.value.base;
+
+        var supsubGroup;
+        if (group.type === "supsub") {
+            // If our base is a character box, and we have superscripts and
+            // subscripts, the supsub will defer to us. In particular, we want
+            // to attach the superscripts and subscripts to the inner body (so
+            // that the position of the superscripts and subscripts won't be
+            // affected by the height of the accent). We accomplish this by
+            // sticking the base of the accent into the base of the supsub, and
+            // rendering that, while keeping track of where the accent is.
+
+            // The supsub group is the group that was passed in
+            var supsub = group;
+            // The real accent group is the base of the supsub group
+            group = supsub.value.base;
+            // The character box is the base of the accent group
+            base = group.value.base;
+            // Stick the character box into the base of the supsub group
+            supsub.value.base = base;
+
+            // Rerender the supsub group with its new base, and store that
+            // result.
+            supsubGroup = buildGroup(
+                supsub, options.reset(), prev);
+        }
+
+        // Build the base group
+        var body = buildGroup(
+            base, options.withStyle(options.style.cramp()));
+
+        // Calculate the skew of the accent. This is based on the line "If the
+        // nucleus is not a single character, let s = 0; otherwise set s to the
+        // kern amount for the nucleus followed by the \skewchar of its font."
+        // Note that our skew metrics are just the kern between each character
+        // and the skewchar.
+        var skew;
+        if (isCharacterBox(base)) {
+            // If the base is a character box, then we want the skew of the
+            // innermost character. To do that, we find the innermost character:
+            var baseChar = getBaseElem(base);
+            // Then, we render its group to get the symbol inside it
+            var baseGroup = buildGroup(
+                baseChar, options.withStyle(options.style.cramp()));
+            // Finally, we pull the skew off of the symbol.
+            skew = baseGroup.skew;
+            // Note that we now throw away baseGroup, because the layers we
+            // removed with getBaseElem might contain things like \color which
+            // we can't get rid of.
+            // TODO(emily): Find a better way to get the skew
+        } else {
+            skew = 0;
+        }
+
+        // calculate the amount of space between the body and the accent
+        var clearance = Math.min(body.height, fontMetrics.metrics.xHeight);
+
+        // Build the accent
+        var accent = buildCommon.makeSymbol(
+            group.value.accent, "Main-Regular", "math", options.getColor());
+        // Remove the italic correction of the accent, because it only serves to
+        // shift the accent over to a place we don't want.
+        accent.italic = 0;
+
+        // The \vec character that the fonts use is a combining character, and
+        // thus shows up much too far to the left. To account for this, we add a
+        // specific class which shifts the accent over to where we want it.
+        // TODO(emily): Fix this in a better way, like by changing the font
+        var vecClass = group.value.accent === "\\vec" ? "accent-vec" : null;
+
+        var accentBody = makeSpan(["accent-body", vecClass], [
+            makeSpan([], [accent])]);
+
+        accentBody = buildCommon.makeVList([
+            {type: "elem", elem: body},
+            {type: "kern", size: -clearance},
+            {type: "elem", elem: accentBody}
+        ], "firstBaseline", null, options);
+
+        // Shift the accent over by the skew. Note we shift by twice the skew
+        // because we are centering the accent, so by adding 2*skew to the left,
+        // we shift it to the right by 1*skew.
+        accentBody.children[1].style.marginLeft = 2 * skew + "em";
+
+        var accentWrap = makeSpan(["mord", "accent"], [accentBody]);
+
+        if (supsubGroup) {
+            // Here, we replace the "base" child of the supsub with our newly
+            // generated accent.
+            supsubGroup.children[0] = accentWrap;
+
+            // Since we don't rerun the height calculation after replacing the
+            // accent, we manually recalculate height.
+            supsubGroup.height = Math.max(accentWrap.height, supsubGroup.height);
+
+            // Accents should always be ords, even when their innards are not.
+            supsubGroup.classes[0] = "mord";
+
+            return supsubGroup;
+        } else {
+            return accentWrap;
+        }
+    },
+
+    phantom: function(group, options, prev) {
+        var elements = buildExpression(
+            group.value.value,
+            options.withPhantom(),
+            prev
+        );
+
+        // \phantom isn't supposed to affect the elements it contains.
+        // See "color" for more details.
+        return new buildCommon.makeFragment(elements);
+    }
+};
+
+/**
+ * buildGroup is the function that takes a group and calls the correct groupType
+ * function for it. It also handles the interaction of size and style changes
+ * between parents and children.
+ */
+var buildGroup = function(group, options, prev) {
+    if (!group) {
+        return makeSpan();
+    }
+
+    if (groupTypes[group.type]) {
+        // Call the groupTypes function
+        var groupNode = groupTypes[group.type](group, options, prev);
+        var multiplier;
+
+        // If the style changed between the parent and the current group,
+        // account for the size difference
+        if (options.style !== options.parentStyle) {
+            multiplier = options.style.sizeMultiplier /
+                    options.parentStyle.sizeMultiplier;
+
+            groupNode.height *= multiplier;
+            groupNode.depth *= multiplier;
+        }
+
+        // If the size changed between the parent and the current group, account
+        // for that size difference.
+        if (options.size !== options.parentSize) {
+            multiplier = buildCommon.sizingMultiplier[options.size] /
+                    buildCommon.sizingMultiplier[options.parentSize];
+
+            groupNode.height *= multiplier;
+            groupNode.depth *= multiplier;
+        }
+
+        return groupNode;
+    } else {
+        throw new ParseError(
+            "Got group of unknown type: '" + group.type + "'");
+    }
+};
+
+/**
+ * Take an entire parse tree, and build it into an appropriate set of HTML
+ * nodes.
+ */
+var buildHTML = function(tree, settings) {
+    // buildExpression is destructive, so we need to make a clone
+    // of the incoming tree so that it isn't accidentally changed
+    tree = JSON.parse(JSON.stringify(tree));
+
+    var startStyle = Style.TEXT;
+    if (settings.displayMode) {
+        startStyle = Style.DISPLAY;
+    }
+
+    // Setup the default options
+    var options = new Options({
+        style: startStyle,
+        size: "size5"
+    });
+
+    // Build the expression contained in the tree
+    var expression = buildExpression(tree, options);
+    var body = makeSpan(["base", options.style.cls()], expression);
+
+    // Add struts, which ensure that the top of the HTML element falls at the
+    // height of the expression, and the bottom of the HTML element falls at the
+    // depth of the expression.
+    var topStrut = makeSpan(["strut"]);
+    var bottomStrut = makeSpan(["strut", "bottom"]);
+
+    topStrut.style.height = body.height + "em";
+    bottomStrut.style.height = (body.height + body.depth) + "em";
+    // We'd like to use `vertical-align: top` but in IE 9 this lowers the
+    // baseline of the box to the bottom of this strut (instead staying in the
+    // normal place) so we use an absolute value for vertical-align instead
+    bottomStrut.style.verticalAlign = -body.depth + "em";
+
+    // Wrap the struts and body together
+    var htmlNode = makeSpan(["katex-html"], [topStrut, bottomStrut, body]);
+
+    htmlNode.setAttribute("aria-hidden", "true");
+
+    return htmlNode;
+};
+
+module.exports = buildHTML;
+
+},{"./Options":4,"./ParseError":5,"./Style":8,"./buildCommon":9,"./delimiter":13,"./domTree":14,"./fontMetrics":16,"./utils":22}],11:[function(require,module,exports){
+/**
+ * This file converts a parse tree into a cooresponding MathML tree. The main
+ * entry point is the `buildMathML` function, which takes a parse tree from the
+ * parser.
+ */
+
+var buildCommon = require("./buildCommon");
+var fontMetrics = require("./fontMetrics");
+var mathMLTree = require("./mathMLTree");
+var Options = require("./Options");
+var ParseError = require("./ParseError");
+var Settings = require("../src/Settings");
+var Style = require("./Style");
+var symbols = require("./symbols");
+var utils = require("./utils");
+
+var makeSpan = buildCommon.makeSpan;
+var fontMap = buildCommon.fontMap;
+
+/**
+ * Takes a symbol and converts it into a MathML text node after performing
+ * optional replacement from symbols.js.
+ */
+var makeText = function(text, mode) {
+    if (symbols[mode][text] && symbols[mode][text].replace) {
+        text = symbols[mode][text].replace;
+    }
+
+    return new mathMLTree.TextNode(text);
+};
+
+/**
+ * Returns the math variant as a string or null if none is required.
+ */
+var getVariant = function(group, options) {
+    var font = options.font;
+    if (!font) {
+        return null;
+    }
+
+    var mode = group.mode;
+    if (font === "mathit") {
+        return "italic";
+    }
+
+    var value = group.value;
+    if (utils.contains(["\\imath", "\\jmath"], value)) {
+        return null;
+    }
+
+    if (symbols[mode][value] && symbols[mode][value].replace) {
+        value = symbols[mode][value].replace;
+    }
+
+    var fontName = fontMap[font].fontName;
+    if (fontMetrics.getCharacterMetrics(value, fontName)) {
+        return fontMap[options.font].variant;
+    }
+
+    return null;
+};
+
+/**
+ * Functions for handling the different types of groups found in the parse
+ * tree. Each function should take a parse group and return a MathML node.
+ */
+var groupTypes = {
+    mathord: function(group, options) {
+        var node = new mathMLTree.MathNode(
+            "mi",
+            [makeText(group.value, group.mode)]);
+
+        var variant = getVariant(group, options);
+        if (variant) {
+            node.setAttribute("mathvariant", variant);
+        }
+        return node;
+    },
+
+    textord: function(group, options) {
+        var text = makeText(group.value, group.mode);
+
+        var variant = getVariant(group, options) || "normal";
+
+        var node;
+        if (/[0-9]/.test(group.value)) {
+            // TODO(kevinb) merge adjacent <mn> nodes
+            // do it as a post processing step
+            node = new mathMLTree.MathNode("mn", [text]);
+            if (options.font) {
+                node.setAttribute("mathvariant", variant);
+            }
+        } else {
+            node = new mathMLTree.MathNode("mi", [text]);
+            node.setAttribute("mathvariant", variant);
+        }
+
+        return node;
+    },
+
+    bin: function(group) {
+        var node = new mathMLTree.MathNode(
+            "mo", [makeText(group.value, group.mode)]);
+
+        return node;
+    },
+
+    rel: function(group) {
+        var node = new mathMLTree.MathNode(
+            "mo", [makeText(group.value, group.mode)]);
+
+        return node;
+    },
+
+    open: function(group) {
+        var node = new mathMLTree.MathNode(
+            "mo", [makeText(group.value, group.mode)]);
+
+        return node;
+    },
+
+    close: function(group) {
+        var node = new mathMLTree.MathNode(
+            "mo", [makeText(group.value, group.mode)]);
+
+        return node;
+    },
+
+    inner: function(group) {
+        var node = new mathMLTree.MathNode(
+            "mo", [makeText(group.value, group.mode)]);
+
+        return node;
+    },
+
+    punct: function(group) {
+        var node = new mathMLTree.MathNode(
+            "mo", [makeText(group.value, group.mode)]);
+
+        node.setAttribute("separator", "true");
+
+        return node;
+    },
+
+    ordgroup: function(group, options) {
+        var inner = buildExpression(group.value, options);
+
+        var node = new mathMLTree.MathNode("mrow", inner);
+
+        return node;
+    },
+
+    text: function(group, options) {
+        var inner = buildExpression(group.value.body, options);
+
+        var node = new mathMLTree.MathNode("mtext", inner);
+
+        return node;
+    },
+
+    color: function(group, options) {
+        var inner = buildExpression(group.value.value, options);
+
+        var node = new mathMLTree.MathNode("mstyle", inner);
+
+        node.setAttribute("mathcolor", group.value.color);
+
+        return node;
+    },
+
+    supsub: function(group, options) {
+        var children = [buildGroup(group.value.base, options)];
+
+        if (group.value.sub) {
+            children.push(buildGroup(group.value.sub, options));
+        }
+
+        if (group.value.sup) {
+            children.push(buildGroup(group.value.sup, options));
+        }
+
+        var nodeType;
+        if (!group.value.sub) {
+            nodeType = "msup";
+        } else if (!group.value.sup) {
+            nodeType = "msub";
+        } else {
+            nodeType = "msubsup";
+        }
+
+        var node = new mathMLTree.MathNode(nodeType, children);
+
+        return node;
+    },
+
+    genfrac: function(group, options) {
+        var node = new mathMLTree.MathNode(
+            "mfrac",
+            [buildGroup(group.value.numer, options),
+             buildGroup(group.value.denom, options)]);
+
+        if (!group.value.hasBarLine) {
+            node.setAttribute("linethickness", "0px");
+        }
+
+        if (group.value.leftDelim != null || group.value.rightDelim != null) {
+            var withDelims = [];
+
+            if (group.value.leftDelim != null) {
+                var leftOp = new mathMLTree.MathNode(
+                    "mo", [new mathMLTree.TextNode(group.value.leftDelim)]);
+
+                leftOp.setAttribute("fence", "true");
+
+                withDelims.push(leftOp);
+            }
+
+            withDelims.push(node);
+
+            if (group.value.rightDelim != null) {
+                var rightOp = new mathMLTree.MathNode(
+                    "mo", [new mathMLTree.TextNode(group.value.rightDelim)]);
+
+                rightOp.setAttribute("fence", "true");
+
+                withDelims.push(rightOp);
+            }
+
+            var outerNode = new mathMLTree.MathNode("mrow", withDelims);
+
+            return outerNode;
+        }
+
+        return node;
+    },
+
+    array: function(group, options) {
+        return new mathMLTree.MathNode(
+            "mtable", group.value.body.map(function(row) {
+                return new mathMLTree.MathNode(
+                    "mtr", row.map(function(cell) {
+                        return new mathMLTree.MathNode(
+                            "mtd", [buildGroup(cell, options)]);
+                    }));
+            }));
+    },
+
+    sqrt: function(group, options) {
+        var node;
+        if (group.value.index) {
+            node = new mathMLTree.MathNode(
+                "mroot", [
+                    buildGroup(group.value.body, options),
+                    buildGroup(group.value.index, options)
+                ]);
+        } else {
+            node = new mathMLTree.MathNode(
+                "msqrt", [buildGroup(group.value.body, options)]);
+        }
+
+        return node;
+    },
+
+    leftright: function(group, options) {
+        var inner = buildExpression(group.value.body, options);
+
+        if (group.value.left !== ".") {
+            var leftNode = new mathMLTree.MathNode(
+                "mo", [makeText(group.value.left, group.mode)]);
+
+            leftNode.setAttribute("fence", "true");
+
+            inner.unshift(leftNode);
+        }
+
+        if (group.value.right !== ".") {
+            var rightNode = new mathMLTree.MathNode(
+                "mo", [makeText(group.value.right, group.mode)]);
+
+            rightNode.setAttribute("fence", "true");
+
+            inner.push(rightNode);
+        }
+
+        var outerNode = new mathMLTree.MathNode("mrow", inner);
+
+        return outerNode;
+    },
+
+    accent: function(group, options) {
+        var accentNode = new mathMLTree.MathNode(
+            "mo", [makeText(group.value.accent, group.mode)]);
+
+        var node = new mathMLTree.MathNode(
+            "mover",
+            [buildGroup(group.value.base, options),
+             accentNode]);
+
+        node.setAttribute("accent", "true");
+
+        return node;
+    },
+
+    spacing: function(group) {
+        var node;
+
+        if (group.value === "\\ " || group.value === "\\space" ||
+            group.value === " " || group.value === "~") {
+            node = new mathMLTree.MathNode(
+                "mtext", [new mathMLTree.TextNode("\u00a0")]);
+        } else {
+            node = new mathMLTree.MathNode("mspace");
+
+            node.setAttribute(
+                "width", buildCommon.spacingFunctions[group.value].size);
+        }
+
+        return node;
+    },
+
+    op: function(group) {
+        var node;
+
+        // TODO(emily): handle big operators using the `largeop` attribute
+
+        if (group.value.symbol) {
+            // This is a symbol. Just add the symbol.
+            node = new mathMLTree.MathNode(
+                "mo", [makeText(group.value.body, group.mode)]);
+        } else {
+            // This is a text operator. Add all of the characters from the
+            // operator's name.
+            // TODO(emily): Add a space in the middle of some of these
+            // operators, like \limsup.
+            node = new mathMLTree.MathNode(
+                "mi", [new mathMLTree.TextNode(group.value.body.slice(1))]);
+        }
+
+        return node;
+    },
+
+    katex: function(group) {
+        var node = new mathMLTree.MathNode(
+            "mtext", [new mathMLTree.TextNode("KaTeX")]);
+
+        return node;
+    },
+
+    font: function(group, options) {
+        var font = group.value.font;
+        var node = buildGroup(group.value.body, options.withFont(font));
+        return node;
+    },
+
+    delimsizing: function(group) {
+        var children = [];
+
+        if (group.value.value !== ".") {
+            children.push(makeText(group.value.value, group.mode));
+        }
+
+        var node = new mathMLTree.MathNode("mo", children);
+
+        if (group.value.delimType === "open" ||
+            group.value.delimType === "close") {
+            // Only some of the delimsizing functions act as fences, and they
+            // return "open" or "close" delimTypes.
+            node.setAttribute("fence", "true");
+        } else {
+            // Explicitly disable fencing if it's not a fence, to override the
+            // defaults.
+            node.setAttribute("fence", "false");
+        }
+
+        return node;
+    },
+
+    styling: function(group, options) {
+        var inner = buildExpression(group.value.value, options);
+
+        var node = new mathMLTree.MathNode("mstyle", inner);
+
+        var styleAttributes = {
+            "display": ["0", "true"],
+            "text": ["0", "false"],
+            "script": ["1", "false"],
+            "scriptscript": ["2", "false"]
+        };
+
+        var attr = styleAttributes[group.value.style];
+
+        node.setAttribute("scriptlevel", attr[0]);
+        node.setAttribute("displaystyle", attr[1]);
+
+        return node;
+    },
+
+    sizing: function(group, options) {
+        var inner = buildExpression(group.value.value, options);
+
+        var node = new mathMLTree.MathNode("mstyle", inner);
+
+        // TODO(emily): This doesn't produce the correct size for nested size
+        // changes, because we don't keep state of what style we're currently
+        // in, so we can't reset the size to normal before changing it.  Now
+        // that we're passing an options parameter we should be able to fix
+        // this.
+        node.setAttribute(
+            "mathsize", buildCommon.sizingMultiplier[group.value.size] + "em");
+
+        return node;
+    },
+
+    overline: function(group, options) {
+        var operator = new mathMLTree.MathNode(
+            "mo", [new mathMLTree.TextNode("\u203e")]);
+        operator.setAttribute("stretchy", "true");
+
+        var node = new mathMLTree.MathNode(
+            "mover",
+            [buildGroup(group.value.body, options),
+             operator]);
+        node.setAttribute("accent", "true");
+
+        return node;
+    },
+
+    rule: function(group) {
+        // TODO(emily): Figure out if there's an actual way to draw black boxes
+        // in MathML.
+        var node = new mathMLTree.MathNode("mrow");
+
+        return node;
+    },
+
+    llap: function(group, options) {
+        var node = new mathMLTree.MathNode(
+            "mpadded", [buildGroup(group.value.body, options)]);
+
+        node.setAttribute("lspace", "-1width");
+        node.setAttribute("width", "0px");
+
+        return node;
+    },
+
+    rlap: function(group, options) {
+        var node = new mathMLTree.MathNode(
+            "mpadded", [buildGroup(group.value.body, options)]);
+
+        node.setAttribute("width", "0px");
+
+        return node;
+    },
+
+    phantom: function(group, options, prev) {
+        var inner = buildExpression(group.value.value, options);
+        return new mathMLTree.MathNode("mphantom", inner);
+    }
+};
+
+/**
+ * Takes a list of nodes, builds them, and returns a list of the generated
+ * MathML nodes. A little simpler than the HTML version because we don't do any
+ * previous-node handling.
+ */
+var buildExpression = function(expression, options) {
+    var groups = [];
+    for (var i = 0; i < expression.length; i++) {
+        var group = expression[i];
+        groups.push(buildGroup(group, options));
+    }
+    return groups;
+};
+
+/**
+ * Takes a group from the parser and calls the appropriate groupTypes function
+ * on it to produce a MathML node.
+ */
+var buildGroup = function(group, options) {
+    if (!group) {
+        return new mathMLTree.MathNode("mrow");
+    }
+
+    if (groupTypes[group.type]) {
+        // Call the groupTypes function
+        return groupTypes[group.type](group, options);
+    } else {
+        throw new ParseError(
+            "Got group of unknown type: '" + group.type + "'");
+    }
+};
+
+/**
+ * Takes a full parse tree and settings and builds a MathML representation of
+ * it. In particular, we put the elements from building the parse tree into a
+ * <semantics> tag so we can also include that TeX source as an annotation.
+ *
+ * Note that we actually return a domTree element with a `<math>` inside it so
+ * we can do appropriate styling.
+ */
+var buildMathML = function(tree, texExpression, settings) {
+    settings = settings || new Settings({});
+
+    var startStyle = Style.TEXT;
+    if (settings.displayMode) {
+        startStyle = Style.DISPLAY;
+    }
+
+    // Setup the default options
+    var options = new Options({
+        style: startStyle,
+        size: "size5"
+    });
+
+    var expression = buildExpression(tree, options);
+
+    // Wrap up the expression in an mrow so it is presented in the semantics
+    // tag correctly.
+    var wrapper = new mathMLTree.MathNode("mrow", expression);
+
+    // Build a TeX annotation of the source
+    var annotation = new mathMLTree.MathNode(
+        "annotation", [new mathMLTree.TextNode(texExpression)]);
+
+    annotation.setAttribute("encoding", "application/x-tex");
+
+    var semantics = new mathMLTree.MathNode(
+        "semantics", [wrapper, annotation]);
+
+    var math = new mathMLTree.MathNode("math", [semantics]);
+
+    // You can't style <math> nodes, so we wrap the node in a span.
+    return makeSpan(["katex-mathml"], [math]);
+};
+
+module.exports = buildMathML;
+
+},{"../src/Settings":7,"./Options":4,"./ParseError":5,"./Style":8,"./buildCommon":9,"./fontMetrics":16,"./mathMLTree":18,"./symbols":21,"./utils":22}],12:[function(require,module,exports){
+
+var buildHTML = require("./buildHTML");
+var buildMathML = require("./buildMathML");
+var buildCommon = require("./buildCommon");
+
+var makeSpan = buildCommon.makeSpan;
+
+var buildTree = function(tree, expression, settings) {
+    // `buildHTML` sometimes messes with the parse tree (like turning bins ->
+    // ords), so we build the MathML version first.
+    var mathMLNode = buildMathML(tree, expression, settings);
+    var htmlNode = buildHTML(tree, settings);
+
+    var katexNode = makeSpan(["katex"], [
+        mathMLNode, htmlNode
+    ]);
+
+    if (settings.displayMode) {
+        return makeSpan(["katex-display"], [katexNode]);
+    } else {
+        return katexNode;
+    }
+};
+
+module.exports = buildTree;
+
+},{"./buildCommon":9,"./buildHTML":10,"./buildMathML":11}],13:[function(require,module,exports){
+/**
+ * This file deals with creating delimiters of various sizes. The TeXbook
+ * discusses these routines on page 441-442, in the "Another subroutine sets box
+ * x to a specified variable delimiter" paragraph.
+ *
+ * There are three main routines here. `makeSmallDelim` makes a delimiter in the
+ * normal font, but in either text, script, or scriptscript style.
+ * `makeLargeDelim` makes a delimiter in textstyle, but in one of the Size1,
+ * Size2, Size3, or Size4 fonts. `makeStackedDelim` makes a delimiter out of
+ * smaller pieces that are stacked on top of one another.
+ *
+ * The functions take a parameter `center`, which determines if the delimiter
+ * should be centered around the axis.
+ *
+ * Then, there are three exposed functions. `sizedDelim` makes a delimiter in
+ * one of the given sizes. This is used for things like `\bigl`.
+ * `customSizedDelim` makes a delimiter with a given total height+depth. It is
+ * called in places like `\sqrt`. `leftRightDelim` makes an appropriate
+ * delimiter which surrounds an expression of a given height an depth. It is
+ * used in `\left` and `\right`.
+ */
+
+var ParseError = require("./ParseError");
+var Style = require("./Style");
+
+var buildCommon = require("./buildCommon");
+var fontMetrics = require("./fontMetrics");
+var symbols = require("./symbols");
+var utils = require("./utils");
+
+var makeSpan = buildCommon.makeSpan;
+
+/**
+ * Get the metrics for a given symbol and font, after transformation (i.e.
+ * after following replacement from symbols.js)
+ */
+var getMetrics = function(symbol, font) {
+    if (symbols.math[symbol] && symbols.math[symbol].replace) {
+        return fontMetrics.getCharacterMetrics(
+            symbols.math[symbol].replace, font);
+    } else {
+        return fontMetrics.getCharacterMetrics(
+            symbol, font);
+    }
+};
+
+/**
+ * Builds a symbol in the given font size (note size is an integer)
+ */
+var mathrmSize = function(value, size, mode) {
+    return buildCommon.makeSymbol(value, "Size" + size + "-Regular", mode);
+};
+
+/**
+ * Puts a delimiter span in a given style, and adds appropriate height, depth,
+ * and maxFontSizes.
+ */
+var styleWrap = function(delim, toStyle, options) {
+    var span = makeSpan(
+        ["style-wrap", options.style.reset(), toStyle.cls()], [delim]);
+
+    var multiplier = toStyle.sizeMultiplier / options.style.sizeMultiplier;
+
+    span.height *= multiplier;
+    span.depth *= multiplier;
+    span.maxFontSize = toStyle.sizeMultiplier;
+
+    return span;
+};
+
+/**
+ * Makes a small delimiter. This is a delimiter that comes in the Main-Regular
+ * font, but is restyled to either be in textstyle, scriptstyle, or
+ * scriptscriptstyle.
+ */
+var makeSmallDelim = function(delim, style, center, options, mode) {
+    var text = buildCommon.makeSymbol(delim, "Main-Regular", mode);
+
+    var span = styleWrap(text, style, options);
+
+    if (center) {
+        var shift =
+            (1 - options.style.sizeMultiplier / style.sizeMultiplier) *
+            fontMetrics.metrics.axisHeight;
+
+        span.style.top = shift + "em";
+        span.height -= shift;
+        span.depth += shift;
+    }
+
+    return span;
+};
+
+/**
+ * Makes a large delimiter. This is a delimiter that comes in the Size1, Size2,
+ * Size3, or Size4 fonts. It is always rendered in textstyle.
+ */
+var makeLargeDelim = function(delim, size, center, options, mode) {
+    var inner = mathrmSize(delim, size, mode);
+
+    var span = styleWrap(
+        makeSpan(["delimsizing", "size" + size],
+                 [inner], options.getColor()),
+        Style.TEXT, options);
+
+    if (center) {
+        var shift = (1 - options.style.sizeMultiplier) *
+            fontMetrics.metrics.axisHeight;
+
+        span.style.top = shift + "em";
+        span.height -= shift;
+        span.depth += shift;
+    }
+
+    return span;
+};
+
+/**
+ * Make an inner span with the given offset and in the given font. This is used
+ * in `makeStackedDelim` to make the stacking pieces for the delimiter.
+ */
+var makeInner = function(symbol, font, mode) {
+    var sizeClass;
+    // Apply the correct CSS class to choose the right font.
+    if (font === "Size1-Regular") {
+        sizeClass = "delim-size1";
+    } else if (font === "Size4-Regular") {
+        sizeClass = "delim-size4";
+    }
+
+    var inner = makeSpan(
+        ["delimsizinginner", sizeClass],
+        [makeSpan([], [buildCommon.makeSymbol(symbol, font, mode)])]);
+
+    // Since this will be passed into `makeVList` in the end, wrap the element
+    // in the appropriate tag that VList uses.
+    return {type: "elem", elem: inner};
+};
+
+/**
+ * Make a stacked delimiter out of a given delimiter, with the total height at
+ * least `heightTotal`. This routine is mentioned on page 442 of the TeXbook.
+ */
+var makeStackedDelim = function(delim, heightTotal, center, options, mode) {
+    // There are four parts, the top, an optional middle, a repeated part, and a
+    // bottom.
+    var top, middle, repeat, bottom;
+    top = repeat = bottom = delim;
+    middle = null;
+    // Also keep track of what font the delimiters are in
+    var font = "Size1-Regular";
+
+    // We set the parts and font based on the symbol. Note that we use
+    // '\u23d0' instead of '|' and '\u2016' instead of '\\|' for the
+    // repeats of the arrows
+    if (delim === "\\uparrow") {
+        repeat = bottom = "\u23d0";
+    } else if (delim === "\\Uparrow") {
+        repeat = bottom = "\u2016";
+    } else if (delim === "\\downarrow") {
+        top = repeat = "\u23d0";
+    } else if (delim === "\\Downarrow") {
+        top = repeat = "\u2016";
+    } else if (delim === "\\updownarrow") {
+        top = "\\uparrow";
+        repeat = "\u23d0";
+        bottom = "\\downarrow";
+    } else if (delim === "\\Updownarrow") {
+        top = "\\Uparrow";
+        repeat = "\u2016";
+        bottom = "\\Downarrow";
+    } else if (delim === "[" || delim === "\\lbrack") {
+        top = "\u23a1";
+        repeat = "\u23a2";
+        bottom = "\u23a3";
+        font = "Size4-Regular";
+    } else if (delim === "]" || delim === "\\rbrack") {
+        top = "\u23a4";
+        repeat = "\u23a5";
+        bottom = "\u23a6";
+        font = "Size4-Regular";
+    } else if (delim === "\\lfloor") {
+        repeat = top = "\u23a2";
+        bottom = "\u23a3";
+        font = "Size4-Regular";
+    } else if (delim === "\\lceil") {
+        top = "\u23a1";
+        repeat = bottom = "\u23a2";
+        font = "Size4-Regular";
+    } else if (delim === "\\rfloor") {
+        repeat = top = "\u23a5";
+        bottom = "\u23a6";
+        font = "Size4-Regular";
+    } else if (delim === "\\rceil") {
+        top = "\u23a4";
+        repeat = bottom = "\u23a5";
+        font = "Size4-Regular";
+    } else if (delim === "(") {
+        top = "\u239b";
+        repeat = "\u239c";
+        bottom = "\u239d";
+        font = "Size4-Regular";
+    } else if (delim === ")") {
+        top = "\u239e";
+        repeat = "\u239f";
+        bottom = "\u23a0";
+        font = "Size4-Regular";
+    } else if (delim === "\\{" || delim === "\\lbrace") {
+        top = "\u23a7";
+        middle = "\u23a8";
+        bottom = "\u23a9";
+        repeat = "\u23aa";
+        font = "Size4-Regular";
+    } else if (delim === "\\}" || delim === "\\rbrace") {
+        top = "\u23ab";
+        middle = "\u23ac";
+        bottom = "\u23ad";
+        repeat = "\u23aa";
+        font = "Size4-Regular";
+    } else if (delim === "\\surd") {
+        top = "\ue001";
+        bottom = "\u23b7";
+        repeat = "\ue000";
+        font = "Size4-Regular";
+    }
+
+    // Get the metrics of the four sections
+    var topMetrics = getMetrics(top, font);
+    var topHeightTotal = topMetrics.height + topMetrics.depth;
+    var repeatMetrics = getMetrics(repeat, font);
+    var repeatHeightTotal = repeatMetrics.height + repeatMetrics.depth;
+    var bottomMetrics = getMetrics(bottom, font);
+    var bottomHeightTotal = bottomMetrics.height + bottomMetrics.depth;
+    var middleHeightTotal = 0;
+    var middleFactor = 1;
+    if (middle !== null) {
+        var middleMetrics = getMetrics(middle, font);
+        middleHeightTotal = middleMetrics.height + middleMetrics.depth;
+        middleFactor = 2; // repeat symmetrically above and below middle
+    }
+
+    // Calcuate the minimal height that the delimiter can have.
+    // It is at least the size of the top, bottom, and optional middle combined.
+    var minHeight = topHeightTotal + bottomHeightTotal + middleHeightTotal;
+
+    // Compute the number of copies of the repeat symbol we will need
+    var repeatCount = Math.ceil(
+        (heightTotal - minHeight) / (middleFactor * repeatHeightTotal));
+
+    // Compute the total height of the delimiter including all the symbols
+    var realHeightTotal =
+        minHeight + repeatCount * middleFactor * repeatHeightTotal;
+
+    // The center of the delimiter is placed at the center of the axis. Note
+    // that in this context, "center" means that the delimiter should be
+    // centered around the axis in the current style, while normally it is
+    // centered around the axis in textstyle.
+    var axisHeight = fontMetrics.metrics.axisHeight;
+    if (center) {
+        axisHeight *= options.style.sizeMultiplier;
+    }
+    // Calculate the depth
+    var depth = realHeightTotal / 2 - axisHeight;
+
+    // Now, we start building the pieces that will go into the vlist
+
+    // Keep a list of the inner pieces
+    var inners = [];
+
+    // Add the bottom symbol
+    inners.push(makeInner(bottom, font, mode));
+
+    var i;
+    if (middle === null) {
+        // Add that many symbols
+        for (i = 0; i < repeatCount; i++) {
+            inners.push(makeInner(repeat, font, mode));
+        }
+    } else {
+        // When there is a middle bit, we need the middle part and two repeated
+        // sections
+        for (i = 0; i < repeatCount; i++) {
+            inners.push(makeInner(repeat, font, mode));
+        }
+        inners.push(makeInner(middle, font, mode));
+        for (i = 0; i < repeatCount; i++) {
+            inners.push(makeInner(repeat, font, mode));
+        }
+    }
+
+    // Add the top symbol
+    inners.push(makeInner(top, font, mode));
+
+    // Finally, build the vlist
+    var inner = buildCommon.makeVList(inners, "bottom", depth, options);
+
+    return styleWrap(
+        makeSpan(["delimsizing", "mult"], [inner], options.getColor()),
+        Style.TEXT, options);
+};
+
+// There are three kinds of delimiters, delimiters that stack when they become
+// too large
+var stackLargeDelimiters = [
+    "(", ")", "[", "\\lbrack", "]", "\\rbrack",
+    "\\{", "\\lbrace", "\\}", "\\rbrace",
+    "\\lfloor", "\\rfloor", "\\lceil", "\\rceil",
+    "\\surd"
+];
+
+// delimiters that always stack
+var stackAlwaysDelimiters = [
+    "\\uparrow", "\\downarrow", "\\updownarrow",
+    "\\Uparrow", "\\Downarrow", "\\Updownarrow",
+    "|", "\\|", "\\vert", "\\Vert"
+];
+
+// and delimiters that never stack
+var stackNeverDelimiters = [
+    "<", ">", "\\langle", "\\rangle", "/", "\\backslash"
+];
+
+// Metrics of the different sizes. Found by looking at TeX's output of
+// $\bigl| // \Bigl| \biggl| \Biggl| \showlists$
+// Used to create stacked delimiters of appropriate sizes in makeSizedDelim.
+var sizeToMaxHeight = [0, 1.2, 1.8, 2.4, 3.0];
+
+/**
+ * Used to create a delimiter of a specific size, where `size` is 1, 2, 3, or 4.
+ */
+var makeSizedDelim = function(delim, size, options, mode) {
+    // < and > turn into \langle and \rangle in delimiters
+    if (delim === "<") {
+        delim = "\\langle";
+    } else if (delim === ">") {
+        delim = "\\rangle";
+    }
+
+    // Sized delimiters are never centered.
+    if (utils.contains(stackLargeDelimiters, delim) ||
+        utils.contains(stackNeverDelimiters, delim)) {
+        return makeLargeDelim(delim, size, false, options, mode);
+    } else if (utils.contains(stackAlwaysDelimiters, delim)) {
+        return makeStackedDelim(
+            delim, sizeToMaxHeight[size], false, options, mode);
+    } else {
+        throw new ParseError("Illegal delimiter: '" + delim + "'");
+    }
+};
+
+/**
+ * There are three different sequences of delimiter sizes that the delimiters
+ * follow depending on the kind of delimiter. This is used when creating custom
+ * sized delimiters to decide whether to create a small, large, or stacked
+ * delimiter.
+ *
+ * In real TeX, these sequences aren't explicitly defined, but are instead
+ * defined inside the font metrics. Since there are only three sequences that
+ * are possible for the delimiters that TeX defines, it is easier to just encode
+ * them explicitly here.
+ */
+
+// Delimiters that never stack try small delimiters and large delimiters only
+var stackNeverDelimiterSequence = [
+    {type: "small", style: Style.SCRIPTSCRIPT},
+    {type: "small", style: Style.SCRIPT},
+    {type: "small", style: Style.TEXT},
+    {type: "large", size: 1},
+    {type: "large", size: 2},
+    {type: "large", size: 3},
+    {type: "large", size: 4}
+];
+
+// Delimiters that always stack try the small delimiters first, then stack
+var stackAlwaysDelimiterSequence = [
+    {type: "small", style: Style.SCRIPTSCRIPT},
+    {type: "small", style: Style.SCRIPT},
+    {type: "small", style: Style.TEXT},
+    {type: "stack"}
+];
+
+// Delimiters that stack when large try the small and then large delimiters, and
+// stack afterwards
+var stackLargeDelimiterSequence = [
+    {type: "small", style: Style.SCRIPTSCRIPT},
+    {type: "small", style: Style.SCRIPT},
+    {type: "small", style: Style.TEXT},
+    {type: "large", size: 1},
+    {type: "large", size: 2},
+    {type: "large", size: 3},
+    {type: "large", size: 4},
+    {type: "stack"}
+];
+
+/**
+ * Get the font used in a delimiter based on what kind of delimiter it is.
+ */
+var delimTypeToFont = function(type) {
+    if (type.type === "small") {
+        return "Main-Regular";
+    } else if (type.type === "large") {
+        return "Size" + type.size + "-Regular";
+    } else if (type.type === "stack") {
+        return "Size4-Regular";
+    }
+};
+
+/**
+ * Traverse a sequence of types of delimiters to decide what kind of delimiter
+ * should be used to create a delimiter of the given height+depth.
+ */
+var traverseSequence = function(delim, height, sequence, options) {
+    // Here, we choose the index we should start at in the sequences. In smaller
+    // sizes (which correspond to larger numbers in style.size) we start earlier
+    // in the sequence. Thus, scriptscript starts at index 3-3=0, script starts
+    // at index 3-2=1, text starts at 3-1=2, and display starts at min(2,3-0)=2
+    var start = Math.min(2, 3 - options.style.size);
+    for (var i = start; i < sequence.length; i++) {
+        if (sequence[i].type === "stack") {
+            // This is always the last delimiter, so we just break the loop now.
+            break;
+        }
+
+        var metrics = getMetrics(delim, delimTypeToFont(sequence[i]));
+        var heightDepth = metrics.height + metrics.depth;
+
+        // Small delimiters are scaled down versions of the same font, so we
+        // account for the style change size.
+
+        if (sequence[i].type === "small") {
+            heightDepth *= sequence[i].style.sizeMultiplier;
+        }
+
+        // Check if the delimiter at this size works for the given height.
+        if (heightDepth > height) {
+            return sequence[i];
+        }
+    }
+
+    // If we reached the end of the sequence, return the last sequence element.
+    return sequence[sequence.length - 1];
+};
+
+/**
+ * Make a delimiter of a given height+depth, with optional centering. Here, we
+ * traverse the sequences, and create a delimiter that the sequence tells us to.
+ */
+var makeCustomSizedDelim = function(delim, height, center, options, mode) {
+    if (delim === "<") {
+        delim = "\\langle";
+    } else if (delim === ">") {
+        delim = "\\rangle";
+    }
+
+    // Decide what sequence to use
+    var sequence;
+    if (utils.contains(stackNeverDelimiters, delim)) {
+        sequence = stackNeverDelimiterSequence;
+    } else if (utils.contains(stackLargeDelimiters, delim)) {
+        sequence = stackLargeDelimiterSequence;
+    } else {
+        sequence = stackAlwaysDelimiterSequence;
+    }
+
+    // Look through the sequence
+    var delimType = traverseSequence(delim, height, sequence, options);
+
+    // Depending on the sequence element we decided on, call the appropriate
+    // function.
+    if (delimType.type === "small") {
+        return makeSmallDelim(delim, delimType.style, center, options, mode);
+    } else if (delimType.type === "large") {
+        return makeLargeDelim(delim, delimType.size, center, options, mode);
+    } else if (delimType.type === "stack") {
+        return makeStackedDelim(delim, height, center, options, mode);
+    }
+};
+
+/**
+ * Make a delimiter for use with `\left` and `\right`, given a height and depth
+ * of an expression that the delimiters surround.
+ */
+var makeLeftRightDelim = function(delim, height, depth, options, mode) {
+    // We always center \left/\right delimiters, so the axis is always shifted
+    var axisHeight =
+        fontMetrics.metrics.axisHeight * options.style.sizeMultiplier;
+
+    // Taken from TeX source, tex.web, function make_left_right
+    var delimiterFactor = 901;
+    var delimiterExtend = 5.0 / fontMetrics.metrics.ptPerEm;
+
+    var maxDistFromAxis = Math.max(
+        height - axisHeight, depth + axisHeight);
+
+    var totalHeight = Math.max(
+        // In real TeX, calculations are done using integral values which are
+        // 65536 per pt, or 655360 per em. So, the division here truncates in
+        // TeX but doesn't here, producing different results. If we wanted to
+        // exactly match TeX's calculation, we could do
+        //   Math.floor(655360 * maxDistFromAxis / 500) *
+        //    delimiterFactor / 655360
+        // (To see the difference, compare
+        //    x^{x^{\left(\rule{0.1em}{0.68em}\right)}}
+        // in TeX and KaTeX)
+        maxDistFromAxis / 500 * delimiterFactor,
+        2 * maxDistFromAxis - delimiterExtend);
+
+    // Finally, we defer to `makeCustomSizedDelim` with our calculated total
+    // height
+    return makeCustomSizedDelim(delim, totalHeight, true, options, mode);
+};
+
+module.exports = {
+    sizedDelim: makeSizedDelim,
+    customSizedDelim: makeCustomSizedDelim,
+    leftRightDelim: makeLeftRightDelim
+};
+
+},{"./ParseError":5,"./Style":8,"./buildCommon":9,"./fontMetrics":16,"./symbols":21,"./utils":22}],14:[function(require,module,exports){
+/**
+ * These objects store the data about the DOM nodes we create, as well as some
+ * extra data. They can then be transformed into real DOM nodes with the
+ * `toNode` function or HTML markup using `toMarkup`. They are useful for both
+ * storing extra properties on the nodes, as well as providing a way to easily
+ * work with the DOM.
+ *
+ * Similar functions for working with MathML nodes exist in mathMLTree.js.
+ */
+
+var utils = require("./utils");
+
+/**
+ * Create an HTML className based on a list of classes. In addition to joining
+ * with spaces, we also remove null or empty classes.
+ */
+var createClass = function(classes) {
+    classes = classes.slice();
+    for (var i = classes.length - 1; i >= 0; i--) {
+        if (!classes[i]) {
+            classes.splice(i, 1);
+        }
+    }
+
+    return classes.join(" ");
+};
+
+/**
+ * This node represents a span node, with a className, a list of children, and
+ * an inline style. It also contains information about its height, depth, and
+ * maxFontSize.
+ */
+function span(classes, children, height, depth, maxFontSize, style) {
+    this.classes = classes || [];
+    this.children = children || [];
+    this.height = height || 0;
+    this.depth = depth || 0;
+    this.maxFontSize = maxFontSize || 0;
+    this.style = style || {};
+    this.attributes = {};
+}
+
+/**
+ * Sets an arbitrary attribute on the span. Warning: use this wisely. Not all
+ * browsers support attributes the same, and having too many custom attributes
+ * is probably bad.
+ */
+span.prototype.setAttribute = function(attribute, value) {
+    this.attributes[attribute] = value;
+};
+
+/**
+ * Convert the span into an HTML node
+ */
+span.prototype.toNode = function() {
+    var span = document.createElement("span");
+
+    // Apply the class
+    span.className = createClass(this.classes);
+
+    // Apply inline styles
+    for (var style in this.style) {
+        if (Object.prototype.hasOwnProperty.call(this.style, style)) {
+            span.style[style] = this.style[style];
+        }
+    }
+
+    // Apply attributes
+    for (var attr in this.attributes) {
+        if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
+            span.setAttribute(attr, this.attributes[attr]);
+        }
+    }
+
+    // Append the children, also as HTML nodes
+    for (var i = 0; i < this.children.length; i++) {
+        span.appendChild(this.children[i].toNode());
+    }
+
+    return span;
+};
+
+/**
+ * Convert the span into an HTML markup string
+ */
+span.prototype.toMarkup = function() {
+    var markup = "<span";
+
+    // Add the class
+    if (this.classes.length) {
+        markup += " class=\"";
+        markup += utils.escape(createClass(this.classes));
+        markup += "\"";
+    }
+
+    var styles = "";
+
+    // Add the styles, after hyphenation
+    for (var style in this.style) {
+        if (this.style.hasOwnProperty(style)) {
+            styles += utils.hyphenate(style) + ":" + this.style[style] + ";";
+        }
+    }
+
+    if (styles) {
+        markup += " style=\"" + utils.escape(styles) + "\"";
+    }
+
+    // Add the attributes
+    for (var attr in this.attributes) {
+        if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
+            markup += " " + attr + "=\"";
+            markup += utils.escape(this.attributes[attr]);
+            markup += "\"";
+        }
+    }
+
+    markup += ">";
+
+    // Add the markup of the children, also as markup
+    for (var i = 0; i < this.children.length; i++) {
+        markup += this.children[i].toMarkup();
+    }
+
+    markup += "</span>";
+
+    return markup;
+};
+
+/**
+ * This node represents a document fragment, which contains elements, but when
+ * placed into the DOM doesn't have any representation itself. Thus, it only
+ * contains children and doesn't have any HTML properties. It also keeps track
+ * of a height, depth, and maxFontSize.
+ */
+function documentFragment(children, height, depth, maxFontSize) {
+    this.children = children || [];
+    this.height = height || 0;
+    this.depth = depth || 0;
+    this.maxFontSize = maxFontSize || 0;
+}
+
+/**
+ * Convert the fragment into a node
+ */
+documentFragment.prototype.toNode = function() {
+    // Create a fragment
+    var frag = document.createDocumentFragment();
+
+    // Append the children
+    for (var i = 0; i < this.children.length; i++) {
+        frag.appendChild(this.children[i].toNode());
+    }
+
+    return frag;
+};
+
+/**
+ * Convert the fragment into HTML markup
+ */
+documentFragment.prototype.toMarkup = function() {
+    var markup = "";
+
+    // Simply concatenate the markup for the children together
+    for (var i = 0; i < this.children.length; i++) {
+        markup += this.children[i].toMarkup();
+    }
+
+    return markup;
+};
+
+/**
+ * A symbol node contains information about a single symbol. It either renders
+ * to a single text node, or a span with a single text node in it, depending on
+ * whether it has CSS classes, styles, or needs italic correction.
+ */
+function symbolNode(value, height, depth, italic, skew, classes, style) {
+    this.value = value || "";
+    this.height = height || 0;
+    this.depth = depth || 0;
+    this.italic = italic || 0;
+    this.skew = skew || 0;
+    this.classes = classes || [];
+    this.style = style || {};
+    this.maxFontSize = 0;
+}
+
+/**
+ * Creates a text node or span from a symbol node. Note that a span is only
+ * created if it is needed.
+ */
+symbolNode.prototype.toNode = function() {
+    var node = document.createTextNode(this.value);
+    var span = null;
+
+    if (this.italic > 0) {
+        span = document.createElement("span");
+        span.style.marginRight = this.italic + "em";
+    }
+
+    if (this.classes.length > 0) {
+        span = span || document.createElement("span");
+        span.className = createClass(this.classes);
+    }
+
+    for (var style in this.style) {
+        if (this.style.hasOwnProperty(style)) {
+            span = span || document.createElement("span");
+            span.style[style] = this.style[style];
+        }
+    }
+
+    if (span) {
+        span.appendChild(node);
+        return span;
+    } else {
+        return node;
+    }
+};
+
+/**
+ * Creates markup for a symbol node.
+ */
+symbolNode.prototype.toMarkup = function() {
+    // TODO(alpert): More duplication than I'd like from
+    // span.prototype.toMarkup and symbolNode.prototype.toNode...
+    var needsSpan = false;
+
+    var markup = "<span";
+
+    if (this.classes.length) {
+        needsSpan = true;
+        markup += " class=\"";
+        markup += utils.escape(createClass(this.classes));
+        markup += "\"";
+    }
+
+    var styles = "";
+
+    if (this.italic > 0) {
+        styles += "margin-right:" + this.italic + "em;";
+    }
+    for (var style in this.style) {
+        if (this.style.hasOwnProperty(style)) {
+            styles += utils.hyphenate(style) + ":" + this.style[style] + ";";
+        }
+    }
+
+    if (styles) {
+        needsSpan = true;
+        markup += " style=\"" + utils.escape(styles) + "\"";
+    }
+
+    var escaped = utils.escape(this.value);
+    if (needsSpan) {
+        markup += ">";
+        markup += escaped;
+        markup += "</span>";
+        return markup;
+    } else {
+        return escaped;
+    }
+};
+
+module.exports = {
+    span: span,
+    documentFragment: documentFragment,
+    symbolNode: symbolNode
+};
+
+},{"./utils":22}],15:[function(require,module,exports){
+var fontMetrics = require("./fontMetrics");
+var parseData = require("./parseData");
+var ParseError = require("./ParseError");
+
+var ParseNode = parseData.ParseNode;
+var ParseResult = parseData.ParseResult;
+
+/**
+ * Parse the body of the environment, with rows delimited by \\ and
+ * columns delimited by &, and create a nested list in row-major order
+ * with one group per cell.
+ */
+function parseArray(parser, pos, mode, result) {
+    var row = [], body = [row], rowGaps = [];
+    while (true) {
+        var cell = parser.parseExpression(pos, mode, false, null);
+        row.push(new ParseNode("ordgroup", cell.result, mode));
+        pos = cell.position;
+        var next = cell.peek.text;
+        if (next === "&") {
+            pos = cell.peek.position;
+        } else if (next === "\\end") {
+            break;
+        } else if (next === "\\\\" || next === "\\cr") {
+            var cr = parser.parseFunction(pos, mode);
+            rowGaps.push(cr.result.value.size);
+            pos = cr.position;
+            row = [];
+            body.push(row);
+        } else {
+            throw new ParseError("Expected & or \\\\ or \\end",
+                                 parser.lexer, cell.peek.position);
+        }
+    }
+    result.body = body;
+    result.rowGaps = rowGaps;
+    return new ParseResult(new ParseNode(result.type, result, mode), pos);
+}
+
+/*
+ * An environment definition is very similar to a function definition.
+ * Each element of the following array may contain
+ *  - names: The names associated with a function. This can be used to
+ *           share one implementation between several similar environments.
+ *  - numArgs: The number of arguments after the \begin{name} function.
+ *  - argTypes: (optional) Just like for a function
+ *  - allowedInText: (optional) Whether or not the environment is allowed inside
+ *                   text mode (default false) (not enforced yet)
+ *  - numOptionalArgs: (optional) Just like for a function
+ *  - handler: The function that is called to handle this environment.
+ *             It will receive the following arguments:
+ *             - pos: the current position of the parser.
+ *             - mode: the current parsing mode.
+ *             - envName: the name of the environment, one of the listed names.
+ *             - [args]: the arguments passed to \begin.
+ *             - positions: the positions associated with these arguments.
+ */
+
+var environmentDefinitions = [
+
+    // Arrays are part of LaTeX, defined in lttab.dtx so its documentation
+    // is part of the source2e.pdf file of LaTeX2e source documentation.
+    {
+        names: ["array"],
+        numArgs: 1,
+        handler: function(pos, mode, envName, colalign, positions) {
+            var parser = this;
+            // Currently only supports alignment, no separators like | yet.
+            colalign = colalign.value.map ? colalign.value : [colalign];
+            var cols = colalign.map(function(node) {
+                var ca = node.value;
+                if ("lcr".indexOf(ca) !== -1) {
+                    return {
+                        align: ca
+                    };
+                }
+                throw new ParseError(
+                    "Unknown column alignment: " + node.value,
+                    parser.lexer, positions[1]);
+            });
+            var res = {
+                type: "array",
+                cols: cols,
+                hskipBeforeAndAfter: true // \@preamble in lttab.dtx
+            };
+            res = parseArray(parser, pos, mode, res);
+            return res;
+        }
+    },
+
+    // The matrix environments of amsmath builds on the array environment
+    // of LaTeX, which is discussed above.
+    {
+        names: [
+            "matrix",
+            "pmatrix",
+            "bmatrix",
+            "Bmatrix",
+            "vmatrix",
+            "Vmatrix"
+        ],
+        handler: function(pos, mode, envName) {
+            var delimiters = {
+                "matrix": null,
+                "pmatrix": ["(", ")"],
+                "bmatrix": ["[", "]"],
+                "Bmatrix": ["\\{", "\\}"],
+                "vmatrix": ["|", "|"],
+                "Vmatrix": ["\\Vert", "\\Vert"]
+            }[envName];
+            var res = {
+                type: "array",
+                hskipBeforeAndAfter: false // \hskip -\arraycolsep in amsmath
+            };
+            res = parseArray(this, pos, mode, res);
+            if (delimiters) {
+                res.result = new ParseNode("leftright", {
+                    body: [res.result],
+                    left: delimiters[0],
+                    right: delimiters[1]
+                }, mode);
+            }
+            return res;
+        }
+    },
+
+    // A cases environment (in amsmath.sty) is almost equivalent to
+    // \def\arraystretch{1.2}%
+    // \left\{\begin{array}{@{}l@{\quad}l@{}} … \end{array}\right.
+    {
+        names: ["cases"],
+        handler: function(pos, mode, envName) {
+            var res = {
+                type: "array",
+                arraystretch: 1.2,
+                cols: [{
+                    align: "l",
+                    pregap: 0,
+                    postgap: fontMetrics.metrics.quad
+                }, {
+                    align: "l",
+                    pregap: 0,
+                    postgap: 0
+                }]
+            };
+            res = parseArray(this, pos, mode, res);
+            res.result = new ParseNode("leftright", {
+                body: [res.result],
+                left: "\\{",
+                right: "."
+            }, mode);
+            return res;
+        }
+    }
+];
+
+module.exports = (function() {
+    // nested function so we don't leak i and j into the module scope
+    var exports = {};
+    for (var i = 0; i < environmentDefinitions.length; ++i) {
+        var def = environmentDefinitions[i];
+        def.greediness = 1;
+        def.allowedInText = !!def.allowedInText;
+        def.numArgs = def.numArgs || 0;
+        def.numOptionalArgs = def.numOptionalArgs || 0;
+        for (var j = 0; j < def.names.length; ++j) {
+            exports[def.names[j]] = def;
+        }
+    }
+    return exports;
+})();
+
+},{"./ParseError":5,"./fontMetrics":16,"./parseData":19}],16:[function(require,module,exports){
+/* jshint unused:false */
+
+var Style = require("./Style");
+
+/**
+ * This file contains metrics regarding fonts and individual symbols. The sigma
+ * and xi variables, as well as the metricMap map contain data extracted from
+ * TeX, TeX font metrics, and the TTF files. These data are then exposed via the
+ * `metrics` variable and the getCharacterMetrics function.
+ */
+
+// These font metrics are extracted from TeX by using
+// \font\a=cmmi10
+// \showthe\fontdimenX\a
+// where X is the corresponding variable number. These correspond to the font
+// parameters of the symbol fonts. In TeX, there are actually three sets of
+// dimensions, one for each of textstyle, scriptstyle, and scriptscriptstyle,
+// but we only use the textstyle ones, and scale certain dimensions accordingly.
+// See the TeXbook, page 441.
+var sigma1 = 0.025;
+var sigma2 = 0;
+var sigma3 = 0;
+var sigma4 = 0;
+var sigma5 = 0.431;
+var sigma6 = 1;
+var sigma7 = 0;
+var sigma8 = 0.677;
+var sigma9 = 0.394;
+var sigma10 = 0.444;
+var sigma11 = 0.686;
+var sigma12 = 0.345;
+var sigma13 = 0.413;
+var sigma14 = 0.363;
+var sigma15 = 0.289;
+var sigma16 = 0.150;
+var sigma17 = 0.247;
+var sigma18 = 0.386;
+var sigma19 = 0.050;
+var sigma20 = 2.390;
+var sigma21 = 1.01;
+var sigma21Script = 0.81;
+var sigma21ScriptScript = 0.71;
+var sigma22 = 0.250;
+
+// These font metrics are extracted from TeX by using
+// \font\a=cmex10
+// \showthe\fontdimenX\a
+// where X is the corresponding variable number. These correspond to the font
+// parameters of the extension fonts (family 3). See the TeXbook, page 441.
+var xi1 = 0;
+var xi2 = 0;
+var xi3 = 0;
+var xi4 = 0;
+var xi5 = 0.431;
+var xi6 = 1;
+var xi7 = 0;
+var xi8 = 0.04;
+var xi9 = 0.111;
+var xi10 = 0.166;
+var xi11 = 0.2;
+var xi12 = 0.6;
+var xi13 = 0.1;
+
+// This value determines how large a pt is, for metrics which are defined in
+// terms of pts.
+// This value is also used in katex.less; if you change it make sure the values
+// match.
+var ptPerEm = 10.0;
+
+/**
+ * This is just a mapping from common names to real metrics
+ */
+var metrics = {
+    xHeight: sigma5,
+    quad: sigma6,
+    num1: sigma8,
+    num2: sigma9,
+    num3: sigma10,
+    denom1: sigma11,
+    denom2: sigma12,
+    sup1: sigma13,
+    sup2: sigma14,
+    sup3: sigma15,
+    sub1: sigma16,
+    sub2: sigma17,
+    supDrop: sigma18,
+    subDrop: sigma19,
+    axisHeight: sigma22,
+    defaultRuleThickness: xi8,
+    bigOpSpacing1: xi9,
+    bigOpSpacing2: xi10,
+    bigOpSpacing3: xi11,
+    bigOpSpacing4: xi12,
+    bigOpSpacing5: xi13,
+    ptPerEm: ptPerEm,
+    emPerEx: sigma5 / sigma6,
+
+    // TODO(alpert): Missing parallel structure here. We should probably add
+    // style-specific metrics for all of these.
+    delim1: sigma20,
+    getDelim2: function(style) {
+        if (style.size === Style.TEXT.size) {
+            return sigma21;
+        } else if (style.size === Style.SCRIPT.size) {
+            return sigma21Script;
+        } else if (style.size === Style.SCRIPTSCRIPT.size) {
+            return sigma21ScriptScript;
+        }
+        throw new Error("Unexpected style size: " + style.size);
+    }
+};
+
+// This map contains a mapping from font name and character code to character
+// metrics, including height, depth, italic correction, and skew (kern from the
+// character to the corresponding \skewchar)
+// This map is generated via `make metrics`. It should not be changed manually.
+var metricMap = 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+
+/**
+ * This function is a convience function for looking up information in the
+ * metricMap table. It takes a character as a string, and a style
+ */
+var getCharacterMetrics = function(character, style) {
+    return metricMap[style][character.charCodeAt(0)];
+};
+
+module.exports = {
+    metrics: metrics,
+    getCharacterMetrics: getCharacterMetrics
+};
+
+},{"./Style":8}],17:[function(require,module,exports){
+var utils = require("./utils");
+var ParseError = require("./ParseError");
+
+// This file contains a list of functions that we parse. The functions map
+// contains the following data:
+
+/*
+ * Keys are the name of the functions to parse
+ * The data contains the following keys:
+ *  - numArgs: The number of arguments the function takes.
+ *  - argTypes: (optional) An array corresponding to each argument of the
+ *              function, giving the type of argument that should be parsed. Its
+ *              length should be equal to `numArgs + numOptionalArgs`. Valid
+ *              types:
+ *               - "size": A size-like thing, such as "1em" or "5ex"
+ *               - "color": An html color, like "#abc" or "blue"
+ *               - "original": The same type as the environment that the
+ *                             function being parsed is in (e.g. used for the
+ *                             bodies of functions like \color where the first
+ *                             argument is special and the second argument is
+ *                             parsed normally)
+ *              Other possible types (probably shouldn't be used)
+ *               - "text": Text-like (e.g. \text)
+ *               - "math": Normal math
+ *              If undefined, this will be treated as an appropriate length
+ *              array of "original" strings
+ *  - greediness: (optional) The greediness of the function to use ungrouped
+ *                arguments.
+ *
+ *                E.g. if you have an expression
+ *                  \sqrt \frac 1 2
+ *                since \frac has greediness=2 vs \sqrt's greediness=1, \frac
+ *                will use the two arguments '1' and '2' as its two arguments,
+ *                then that whole function will be used as the argument to
+ *                \sqrt. On the other hand, the expressions
+ *                  \frac \frac 1 2 3
+ *                and
+ *                  \frac \sqrt 1 2
+ *                will fail because \frac and \frac have equal greediness
+ *                and \sqrt has a lower greediness than \frac respectively. To
+ *                make these parse, we would have to change them to:
+ *                  \frac {\frac 1 2} 3
+ *                and
+ *                  \frac {\sqrt 1} 2
+ *
+ *                The default value is `1`
+ *  - allowedInText: (optional) Whether or not the function is allowed inside
+ *                   text mode (default false)
+ *  - numOptionalArgs: (optional) The number of optional arguments the function
+ *                     should parse. If the optional arguments aren't found,
+ *                     `null` will be passed to the handler in their place.
+ *                     (default 0)
+ *  - handler: The function that is called to handle this function and its
+ *             arguments. The arguments are:
+ *              - func: the text of the function
+ *              - [args]: the next arguments are the arguments to the function,
+ *                        of which there are numArgs of them
+ *              - positions: the positions in the overall string of the function
+ *                           and the arguments. Should only be used to produce
+ *                           error messages
+ *             The function should return an object with the following keys:
+ *              - type: The type of element that this is. This is then used in
+ *                      buildHTML/buildMathML to determine which function
+ *                      should be called to build this node into a DOM node
+ *             Any other data can be added to the object, which will be passed
+ *             in to the function in buildHTML/buildMathML as `group.value`.
+ */
+
+var functions = {
+    // A normal square root
+    "\\sqrt": {
+        numArgs: 1,
+        numOptionalArgs: 1,
+        handler: function(func, index, body, positions) {
+            return {
+                type: "sqrt",
+                body: body,
+                index: index
+            };
+        }
+    },
+
+    // Some non-mathy text
+    "\\text": {
+        numArgs: 1,
+        argTypes: ["text"],
+        greediness: 2,
+        handler: function(func, body) {
+            // Since the corresponding buildHTML/buildMathML function expects a
+            // list of elements, we normalize for different kinds of arguments
+            // TODO(emily): maybe this should be done somewhere else
+            var inner;
+            if (body.type === "ordgroup") {
+                inner = body.value;
+            } else {
+                inner = [body];
+            }
+
+            return {
+                type: "text",
+                body: inner
+            };
+        }
+    },
+
+    // A two-argument custom color
+    "\\color": {
+        numArgs: 2,
+        allowedInText: true,
+        greediness: 3,
+        argTypes: ["color", "original"],
+        handler: function(func, color, body) {
+            // Normalize the different kinds of bodies (see \text above)
+            var inner;
+            if (body.type === "ordgroup") {
+                inner = body.value;
+            } else {
+                inner = [body];
+            }
+
+            return {
+                type: "color",
+                color: color.value,
+                value: inner
+            };
+        }
+    },
+
+    // An overline
+    "\\overline": {
+        numArgs: 1,
+        handler: function(func, body) {
+            return {
+                type: "overline",
+                body: body
+            };
+        }
+    },
+
+    // A box of the width and height
+    "\\rule": {
+        numArgs: 2,
+        numOptionalArgs: 1,
+        argTypes: ["size", "size", "size"],
+        handler: function(func, shift, width, height) {
+            return {
+                type: "rule",
+                shift: shift && shift.value,
+                width: width.value,
+                height: height.value
+            };
+        }
+    },
+
+    // A KaTeX logo
+    "\\KaTeX": {
+        numArgs: 0,
+        handler: function(func) {
+            return {
+                type: "katex"
+            };
+        }
+    },
+
+    "\\phantom": {
+        numArgs: 1,
+        handler: function(func, body) {
+            var inner;
+            if (body.type === "ordgroup") {
+                inner = body.value;
+            } else {
+                inner = [body];
+            }
+
+            return {
+                type: "phantom",
+                value: inner
+            };
+        }
+    }
+};
+
+// Extra data needed for the delimiter handler down below
+var delimiterSizes = {
+    "\\bigl" : {type: "open",    size: 1},
+    "\\Bigl" : {type: "open",    size: 2},
+    "\\biggl": {type: "open",    size: 3},
+    "\\Biggl": {type: "open",    size: 4},
+    "\\bigr" : {type: "close",   size: 1},
+    "\\Bigr" : {type: "close",   size: 2},
+    "\\biggr": {type: "close",   size: 3},
+    "\\Biggr": {type: "close",   size: 4},
+    "\\bigm" : {type: "rel",     size: 1},
+    "\\Bigm" : {type: "rel",     size: 2},
+    "\\biggm": {type: "rel",     size: 3},
+    "\\Biggm": {type: "rel",     size: 4},
+    "\\big"  : {type: "textord", size: 1},
+    "\\Big"  : {type: "textord", size: 2},
+    "\\bigg" : {type: "textord", size: 3},
+    "\\Bigg" : {type: "textord", size: 4}
+};
+
+var delimiters = [
+    "(", ")", "[", "\\lbrack", "]", "\\rbrack",
+    "\\{", "\\lbrace", "\\}", "\\rbrace",
+    "\\lfloor", "\\rfloor", "\\lceil", "\\rceil",
+    "<", ">", "\\langle", "\\rangle",
+    "/", "\\backslash",
+    "|", "\\vert", "\\|", "\\Vert",
+    "\\uparrow", "\\Uparrow",
+    "\\downarrow", "\\Downarrow",
+    "\\updownarrow", "\\Updownarrow",
+    "."
+];
+
+var fontAliases = {
+    // amstex.sty
+    "\\frak": "\\mathfrak",
+    "\\Bbb": "\\mathbb",
+    "\\bold": "\\mathbf",
+    // article.cls
+    "\\rm": "\\mathrm",
+    "\\sf": "\\mathsf",
+    "\\tt": "\\mathtt",
+    "\\bf": "\\mathbf",
+    "\\it": "\\mathit",
+    "\\cal": "\\mathcal"
+};
+
+/*
+ * This is a list of functions which each have the same function but have
+ * different names so that we don't have to duplicate the data a bunch of times.
+ * Each element in the list is an object with the following keys:
+ *  - funcs: A list of function names to be associated with the data
+ *  - data: An objecty with the same data as in each value of the `function`
+ *          table above
+ */
+var duplicatedFunctions = [
+    // Single-argument color functions
+    {
+        funcs: [
+            "\\blue", "\\orange", "\\pink", "\\red",
+            "\\green", "\\gray", "\\purple",
+            "\\blueA", "\\blueB", "\\blueC", "\\blueD", "\\blueE",
+            "\\tealA", "\\tealB", "\\tealC", "\\tealD", "\\tealE",
+            "\\greenA", "\\greenB", "\\greenC", "\\greenD", "\\greenE",
+            "\\goldA", "\\goldB", "\\goldC", "\\goldD", "\\goldE",
+            "\\redA", "\\redB", "\\redC", "\\redD", "\\redE",
+            "\\maroonA", "\\maroonB", "\\maroonC", "\\maroonD", "\\maroonE",
+            "\\purpleA", "\\purpleB", "\\purpleC", "\\purpleD", "\\purpleE",
+            "\\mintA", "\\mintB", "\\mintC",
+            "\\grayA", "\\grayB", "\\grayC", "\\grayD", "\\grayE",
+            "\\grayF", "\\grayG", "\\grayH", "\\grayI",
+            "\\kaBlue", "\\kaGreen"
+        ],
+        data: {
+            numArgs: 1,
+            allowedInText: true,
+            greediness: 3,
+            handler: function(func, body) {
+                var atoms;
+                if (body.type === "ordgroup") {
+                    atoms = body.value;
+                } else {
+                    atoms = [body];
+                }
+
+                return {
+                    type: "color",
+                    color: "katex-" + func.slice(1),
+                    value: atoms
+                };
+            }
+        }
+    },
+
+    // There are 2 flags for operators; whether they produce limits in
+    // displaystyle, and whether they are symbols and should grow in
+    // displaystyle. These four groups cover the four possible choices.
+
+    // No limits, not symbols
+    {
+        funcs: [
+            "\\arcsin", "\\arccos", "\\arctan", "\\arg", "\\cos", "\\cosh",
+            "\\cot", "\\coth", "\\csc", "\\deg", "\\dim", "\\exp", "\\hom",
+            "\\ker", "\\lg", "\\ln", "\\log", "\\sec", "\\sin", "\\sinh",
+            "\\tan","\\tanh"
+        ],
+        data: {
+            numArgs: 0,
+            handler: function(func) {
+                return {
+                    type: "op",
+                    limits: false,
+                    symbol: false,
+                    body: func
+                };
+            }
+        }
+    },
+
+    // Limits, not symbols
+    {
+        funcs: [
+            "\\det", "\\gcd", "\\inf", "\\lim", "\\liminf", "\\limsup", "\\max",
+            "\\min", "\\Pr", "\\sup"
+        ],
+        data: {
+            numArgs: 0,
+            handler: function(func) {
+                return {
+                    type: "op",
+                    limits: true,
+                    symbol: false,
+                    body: func
+                };
+            }
+        }
+    },
+
+    // No limits, symbols
+    {
+        funcs: [
+            "\\int", "\\iint", "\\iiint", "\\oint"
+        ],
+        data: {
+            numArgs: 0,
+            handler: function(func) {
+                return {
+                    type: "op",
+                    limits: false,
+                    symbol: true,
+                    body: func
+                };
+            }
+        }
+    },
+
+    // Limits, symbols
+    {
+        funcs: [
+            "\\coprod", "\\bigvee", "\\bigwedge", "\\biguplus", "\\bigcap",
+            "\\bigcup", "\\intop", "\\prod", "\\sum", "\\bigotimes",
+            "\\bigoplus", "\\bigodot", "\\bigsqcup", "\\smallint"
+        ],
+        data: {
+            numArgs: 0,
+            handler: function(func) {
+                return {
+                    type: "op",
+                    limits: true,
+                    symbol: true,
+                    body: func
+                };
+            }
+        }
+    },
+
+    // Fractions
+    {
+        funcs: [
+            "\\dfrac", "\\frac", "\\tfrac",
+            "\\dbinom", "\\binom", "\\tbinom"
+        ],
+        data: {
+            numArgs: 2,
+            greediness: 2,
+            handler: function(func, numer, denom) {
+                var hasBarLine;
+                var leftDelim = null;
+                var rightDelim = null;
+                var size = "auto";
+
+                switch (func) {
+                    case "\\dfrac":
+                    case "\\frac":
+                    case "\\tfrac":
+                        hasBarLine = true;
+                        break;
+                    case "\\dbinom":
+                    case "\\binom":
+                    case "\\tbinom":
+                        hasBarLine = false;
+                        leftDelim = "(";
+                        rightDelim = ")";
+                        break;
+                    default:
+                        throw new Error("Unrecognized genfrac command");
+                }
+
+                switch (func) {
+                    case "\\dfrac":
+                    case "\\dbinom":
+                        size = "display";
+                        break;
+                    case "\\tfrac":
+                    case "\\tbinom":
+                        size = "text";
+                        break;
+                }
+
+                return {
+                    type: "genfrac",
+                    numer: numer,
+                    denom: denom,
+                    hasBarLine: hasBarLine,
+                    leftDelim: leftDelim,
+                    rightDelim: rightDelim,
+                    size: size
+                };
+            }
+        }
+    },
+
+    // Left and right overlap functions
+    {
+        funcs: ["\\llap", "\\rlap"],
+        data: {
+            numArgs: 1,
+            allowedInText: true,
+            handler: function(func, body) {
+                return {
+                    type: func.slice(1),
+                    body: body
+                };
+            }
+        }
+    },
+
+    // Delimiter functions
+    {
+        funcs: [
+            "\\bigl", "\\Bigl", "\\biggl", "\\Biggl",
+            "\\bigr", "\\Bigr", "\\biggr", "\\Biggr",
+            "\\bigm", "\\Bigm", "\\biggm", "\\Biggm",
+            "\\big",  "\\Big",  "\\bigg",  "\\Bigg",
+            "\\left", "\\right"
+        ],
+        data: {
+            numArgs: 1,
+            handler: function(func, delim, positions) {
+                if (!utils.contains(delimiters, delim.value)) {
+                    throw new ParseError(
+                        "Invalid delimiter: '" + delim.value + "' after '" +
+                            func + "'",
+                        this.lexer, positions[1]);
+                }
+
+                // \left and \right are caught somewhere in Parser.js, which is
+                // why this data doesn't match what is in buildHTML.
+                if (func === "\\left" || func === "\\right") {
+                    return {
+                        type: "leftright",
+                        value: delim.value
+                    };
+                } else {
+                    return {
+                        type: "delimsizing",
+                        size: delimiterSizes[func].size,
+                        delimType: delimiterSizes[func].type,
+                        value: delim.value
+                    };
+                }
+            }
+        }
+    },
+
+    // Sizing functions (handled in Parser.js explicitly, hence no handler)
+    {
+        funcs: [
+            "\\tiny", "\\scriptsize", "\\footnotesize", "\\small",
+            "\\normalsize", "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge"
+        ],
+        data: {
+            numArgs: 0
+        }
+    },
+
+    // Style changing functions (handled in Parser.js explicitly, hence no
+    // handler)
+    {
+        funcs: [
+            "\\displaystyle", "\\textstyle", "\\scriptstyle",
+            "\\scriptscriptstyle"
+        ],
+        data: {
+            numArgs: 0
+        }
+    },
+
+    {
+        funcs: [
+            // styles
+            "\\mathrm", "\\mathit", "\\mathbf",
+
+            // families
+            "\\mathbb",  "\\mathcal", "\\mathfrak", "\\mathscr", "\\mathsf",
+            "\\mathtt"
+        ],
+        data: {
+            numArgs: 1,
+            handler: function (func, body) {
+                if (func in fontAliases) {
+                    func = fontAliases[func];
+                }
+                return {
+                    type: "font",
+                    font: func.slice(1),
+                    body: body
+                };
+            }
+        }
+    },
+
+    // Accents
+    {
+        funcs: [
+            "\\acute", "\\grave", "\\ddot", "\\tilde", "\\bar", "\\breve",
+            "\\check", "\\hat", "\\vec", "\\dot"
+            // We don't support expanding accents yet
+            // "\\widetilde", "\\widehat"
+        ],
+        data: {
+            numArgs: 1,
+            handler: function(func, base) {
+                return {
+                    type: "accent",
+                    accent: func,
+                    base: base
+                };
+            }
+        }
+    },
+
+    // Infix generalized fractions
+    {
+        funcs: ["\\over", "\\choose"],
+        data: {
+            numArgs: 0,
+            handler: function (func) {
+                var replaceWith;
+                switch (func) {
+                    case "\\over":
+                        replaceWith = "\\frac";
+                        break;
+                    case "\\choose":
+                        replaceWith = "\\binom";
+                        break;
+                    default:
+                        throw new Error("Unrecognized infix genfrac command");
+                }
+                return {
+                    type: "infix",
+                    replaceWith: replaceWith
+                };
+            }
+        }
+    },
+
+    // Row breaks for aligned data
+    {
+        funcs: ["\\\\", "\\cr"],
+        data: {
+            numArgs: 0,
+            numOptionalArgs: 1,
+            argTypes: ["size"],
+            handler: function(func, size) {
+                return {
+                    type: "cr",
+                    size: size
+                };
+            }
+        }
+    },
+
+    // Environment delimiters
+    {
+        funcs: ["\\begin", "\\end"],
+        data: {
+            numArgs: 1,
+            argTypes: ["text"],
+            handler: function(func, nameGroup, positions) {
+                if (nameGroup.type !== "ordgroup") {
+                    throw new ParseError(
+                        "Invalid environment name",
+                        this.lexer, positions[1]);
+                }
+                var name = "";
+                for (var i = 0; i < nameGroup.value.length; ++i) {
+                    name += nameGroup.value[i].value;
+                }
+                return {
+                    type: "environment",
+                    name: name,
+                    namepos: positions[1]
+                };
+            }
+        }
+    }
+];
+
+var addFuncsWithData = function(funcs, data) {
+    for (var i = 0; i < funcs.length; i++) {
+        functions[funcs[i]] = data;
+    }
+};
+
+// Add all of the functions in duplicatedFunctions to the functions map
+for (var i = 0; i < duplicatedFunctions.length; i++) {
+    addFuncsWithData(duplicatedFunctions[i].funcs, duplicatedFunctions[i].data);
+}
+
+// Set default values of functions
+for (var f in functions) {
+    if (functions.hasOwnProperty(f)) {
+        var func = functions[f];
+
+        functions[f] = {
+            numArgs: func.numArgs,
+            argTypes: func.argTypes,
+            greediness: (func.greediness === undefined) ? 1 : func.greediness,
+            allowedInText: func.allowedInText ? func.allowedInText : false,
+            numOptionalArgs: (func.numOptionalArgs === undefined) ? 0 :
+                func.numOptionalArgs,
+            handler: func.handler
+        };
+    }
+}
+
+module.exports = {
+    funcs: functions
+};
+
+},{"./ParseError":5,"./utils":22}],18:[function(require,module,exports){
+/**
+ * These objects store data about MathML nodes. This is the MathML equivalent
+ * of the types in domTree.js. Since MathML handles its own rendering, and
+ * since we're mainly using MathML to improve accessibility, we don't manage
+ * any of the styling state that the plain DOM nodes do.
+ *
+ * The `toNode` and `toMarkup` functions work simlarly to how they do in
+ * domTree.js, creating namespaced DOM nodes and HTML text markup respectively.
+ */
+
+var utils = require("./utils");
+
+/**
+ * This node represents a general purpose MathML node of any type. The
+ * constructor requires the type of node to create (for example, `"mo"` or
+ * `"mspace"`, corresponding to `<mo>` and `<mspace>` tags).
+ */
+function MathNode(type, children) {
+    this.type = type;
+    this.attributes = {};
+    this.children = children || [];
+}
+
+/**
+ * Sets an attribute on a MathML node. MathML depends on attributes to convey a
+ * semantic content, so this is used heavily.
+ */
+MathNode.prototype.setAttribute = function(name, value) {
+    this.attributes[name] = value;
+};
+
+/**
+ * Converts the math node into a MathML-namespaced DOM element.
+ */
+MathNode.prototype.toNode = function() {
+    var node = document.createElementNS(
+        "http://www.w3.org/1998/Math/MathML", this.type);
+
+    for (var attr in this.attributes) {
+        if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
+            node.setAttribute(attr, this.attributes[attr]);
+        }
+    }
+
+    for (var i = 0; i < this.children.length; i++) {
+        node.appendChild(this.children[i].toNode());
+    }
+
+    return node;
+};
+
+/**
+ * Converts the math node into an HTML markup string.
+ */
+MathNode.prototype.toMarkup = function() {
+    var markup = "<" + this.type;
+
+    // Add the attributes
+    for (var attr in this.attributes) {
+        if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {
+            markup += " " + attr + "=\"";
+            markup += utils.escape(this.attributes[attr]);
+            markup += "\"";
+        }
+    }
+
+    markup += ">";
+
+    for (var i = 0; i < this.children.length; i++) {
+        markup += this.children[i].toMarkup();
+    }
+
+    markup += "</" + this.type + ">";
+
+    return markup;
+};
+
+/**
+ * This node represents a piece of text.
+ */
+function TextNode(text) {
+    this.text = text;
+}
+
+/**
+ * Converts the text node into a DOM text node.
+ */
+TextNode.prototype.toNode = function() {
+    return document.createTextNode(this.text);
+};
+
+/**
+ * Converts the text node into HTML markup (which is just the text itself).
+ */
+TextNode.prototype.toMarkup = function() {
+    return utils.escape(this.text);
+};
+
+module.exports = {
+    MathNode: MathNode,
+    TextNode: TextNode
+};
+
+},{"./utils":22}],19:[function(require,module,exports){
+/**
+ * The resulting parse tree nodes of the parse tree.
+ */
+function ParseNode(type, value, mode) {
+    this.type = type;
+    this.value = value;
+    this.mode = mode;
+}
+
+/**
+ * A result and final position returned by the `.parse...` functions.
+ * 
+ */
+function ParseResult(result, newPosition, peek) {
+    this.result = result;
+    this.position = newPosition;
+}
+
+module.exports = {
+    ParseNode: ParseNode,
+    ParseResult: ParseResult
+};
+
+
+},{}],20:[function(require,module,exports){
+/**
+ * Provides a single function for parsing an expression using a Parser
+ * TODO(emily): Remove this
+ */
+
+var Parser = require("./Parser");
+
+/**
+ * Parses an expression using a Parser, then returns the parsed result.
+ */
+var parseTree = function(toParse, settings) {
+    var parser = new Parser(toParse, settings);
+
+    return parser.parse();
+};
+
+module.exports = parseTree;
+
+},{"./Parser":6}],21:[function(require,module,exports){
+/**
+ * This file holds a list of all no-argument functions and single-character
+ * symbols (like 'a' or ';').
+ *
+ * For each of the symbols, there are three properties they can have:
+ * - font (required): the font to be used for this symbol. Either "main" (the
+     normal font), or "ams" (the ams fonts).
+ * - group (required): the ParseNode group type the symbol should have (i.e.
+     "textord", "mathord", etc).
+ * - replace (optional): the character that this symbol or function should be
+ *   replaced with (i.e. "\phi" has a replace value of "\u03d5", the phi
+ *   character in the main font).
+ *
+ * The outermost map in the table indicates what mode the symbols should be
+ * accepted in (e.g. "math" or "text").
+ */
+
+var symbols = {
+    "math": {
+        // Relation Symbols
+        "\\equiv": {
+            font: "main",
+            group: "rel",
+            replace: "\u2261"
+        },
+        "\\prec": {
+            font: "main",
+            group: "rel",
+            replace: "\u227a"
+        },
+        "\\succ": {
+            font: "main",
+            group: "rel",
+            replace: "\u227b"
+        },
+        "\\sim": {
+            font: "main",
+            group: "rel",
+            replace: "\u223c"
+        },
+        "\\perp": {
+            font: "main",
+            group: "rel",
+            replace: "\u22a5"
+        },
+        "\\preceq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2aaf"
+        },
+        "\\succeq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2ab0"
+        },
+        "\\simeq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2243"
+        },
+        "\\mid": {
+            font: "main",
+            group: "rel",
+            replace: "\u2223"
+        },
+        "\\ll": {
+            font: "main",
+            group: "rel",
+            replace: "\u226a"
+        },
+        "\\gg": {
+            font: "main",
+            group: "rel",
+            replace: "\u226b"
+        },
+        "\\asymp": {
+            font: "main",
+            group: "rel",
+            replace: "\u224d"
+        },
+        "\\parallel": {
+            font: "main",
+            group: "rel",
+            replace: "\u2225"
+        },
+        "\\bowtie": {
+            font: "main",
+            group: "rel",
+            replace: "\u22c8"
+        },
+        "\\smile": {
+            font: "main",
+            group: "rel",
+            replace: "\u2323"
+        },
+        "\\sqsubseteq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2291"
+        },
+        "\\sqsupseteq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2292"
+        },
+        "\\doteq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2250"
+        },
+        "\\frown": {
+            font: "main",
+            group: "rel",
+            replace: "\u2322"
+        },
+        "\\ni": {
+            font: "main",
+            group: "rel",
+            replace: "\u220b"
+        },
+        "\\propto": {
+            font: "main",
+            group: "rel",
+            replace: "\u221d"
+        },
+        "\\vdash": {
+            font: "main",
+            group: "rel",
+            replace: "\u22a2"
+        },
+        "\\dashv": {
+            font: "main",
+            group: "rel",
+            replace: "\u22a3"
+        },
+        "\\owns": {
+            font: "main",
+            group: "rel",
+            replace: "\u220b"
+        },
+
+        // Punctuation
+        "\\ldotp": {
+            font: "main",
+            group: "punct",
+            replace: "\u002e"
+        },
+        "\\cdotp": {
+            font: "main",
+            group: "punct",
+            replace: "\u22c5"
+        },
+
+        // Misc Symbols
+        "\\#": {
+          font: "main",
+          group: "textord",
+          replace: "\u0023"
+        },
+        "\\&": {
+          font: "main",
+          group: "textord",
+          replace: "\u0026"
+        },
+        "\\aleph": {
+            font: "main",
+            group: "textord",
+            replace: "\u2135"
+        },
+        "\\forall": {
+            font: "main",
+            group: "textord",
+            replace: "\u2200"
+        },
+        "\\hbar": {
+            font: "main",
+            group: "textord",
+            replace: "\u210f"
+        },
+        "\\exists": {
+            font: "main",
+            group: "textord",
+            replace: "\u2203"
+        },
+        "\\nabla": {
+            font: "main",
+            group: "textord",
+            replace: "\u2207"
+        },
+        "\\flat": {
+            font: "main",
+            group: "textord",
+            replace: "\u266d"
+        },
+        "\\ell": {
+            font: "main",
+            group: "textord",
+            replace: "\u2113"
+        },
+        "\\natural": {
+            font: "main",
+            group: "textord",
+            replace: "\u266e"
+        },
+        "\\clubsuit": {
+            font: "main",
+            group: "textord",
+            replace: "\u2663"
+        },
+        "\\wp": {
+            font: "main",
+            group: "textord",
+            replace: "\u2118"
+        },
+        "\\sharp": {
+            font: "main",
+            group: "textord",
+            replace: "\u266f"
+        },
+        "\\diamondsuit": {
+            font: "main",
+            group: "textord",
+            replace: "\u2662"
+        },
+        "\\Re": {
+            font: "main",
+            group: "textord",
+            replace: "\u211c"
+        },
+        "\\heartsuit": {
+            font: "main",
+            group: "textord",
+            replace: "\u2661"
+        },
+        "\\Im": {
+            font: "main",
+            group: "textord",
+            replace: "\u2111"
+        },
+        "\\spadesuit": {
+            font: "main",
+            group: "textord",
+            replace: "\u2660"
+        },
+
+        // Math and Text
+        "\\dag": {
+            font: "main",
+            group: "textord",
+            replace: "\u2020"
+        },
+        "\\ddag": {
+            font: "main",
+            group: "textord",
+            replace: "\u2021"
+        },
+
+        // Large Delimiters
+        "\\rmoustache": {
+            font: "main",
+            group: "close",
+            replace: "\u23b1"
+        },
+        "\\lmoustache": {
+            font: "main",
+            group: "open",
+            replace: "\u23b0"
+        },
+        "\\rgroup": {
+            font: "main",
+            group: "close",
+            replace: "\u27ef"
+        },
+        "\\lgroup": {
+            font: "main",
+            group: "open",
+            replace: "\u27ee"
+        },
+
+        // Binary Operators
+        "\\mp": {
+            font: "main",
+            group: "bin",
+            replace: "\u2213"
+        },
+        "\\ominus": {
+            font: "main",
+            group: "bin",
+            replace: "\u2296"
+        },
+        "\\uplus": {
+            font: "main",
+            group: "bin",
+            replace: "\u228e"
+        },
+        "\\sqcap": {
+            font: "main",
+            group: "bin",
+            replace: "\u2293"
+        },
+        "\\ast": {
+            font: "main",
+            group: "bin",
+            replace: "\u2217"
+        },
+        "\\sqcup": {
+            font: "main",
+            group: "bin",
+            replace: "\u2294"
+        },
+        "\\bigcirc": {
+            font: "main",
+            group: "bin",
+            replace: "\u25ef"
+        },
+        "\\bullet": {
+            font: "main",
+            group: "bin",
+            replace: "\u2219"
+        },
+        "\\ddagger": {
+            font: "main",
+            group: "bin",
+            replace: "\u2021"
+        },
+        "\\wr": {
+            font: "main",
+            group: "bin",
+            replace: "\u2240"
+        },
+        "\\amalg": {
+            font: "main",
+            group: "bin",
+            replace: "\u2a3f"
+        },
+
+        // Arrow Symbols
+        "\\longleftarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u27f5"
+        },
+        "\\Leftarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u21d0"
+        },
+        "\\Longleftarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u27f8"
+        },
+        "\\longrightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u27f6"
+        },
+        "\\Rightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u21d2"
+        },
+        "\\Longrightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u27f9"
+        },
+        "\\leftrightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u2194"
+        },
+        "\\longleftrightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u27f7"
+        },
+        "\\Leftrightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u21d4"
+        },
+        "\\Longleftrightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u27fa"
+        },
+        "\\mapsto": {
+            font: "main",
+            group: "rel",
+            replace: "\u21a6"
+        },
+        "\\longmapsto": {
+            font: "main",
+            group: "rel",
+            replace: "\u27fc"
+        },
+        "\\nearrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u2197"
+        },
+        "\\hookleftarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u21a9"
+        },
+        "\\hookrightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u21aa"
+        },
+        "\\searrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u2198"
+        },
+        "\\leftharpoonup": {
+            font: "main",
+            group: "rel",
+            replace: "\u21bc"
+        },
+        "\\rightharpoonup": {
+            font: "main",
+            group: "rel",
+            replace: "\u21c0"
+        },
+        "\\swarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u2199"
+        },
+        "\\leftharpoondown": {
+            font: "main",
+            group: "rel",
+            replace: "\u21bd"
+        },
+        "\\rightharpoondown": {
+            font: "main",
+            group: "rel",
+            replace: "\u21c1"
+        },
+        "\\nwarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u2196"
+        },
+        "\\rightleftharpoons": {
+            font: "main",
+            group: "rel",
+            replace: "\u21cc"
+        },
+
+        // AMS Negated Binary Relations
+        "\\nless": {
+            font: "ams",
+            group: "rel",
+            replace: "\u226e"
+        },
+        "\\nleqslant": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue010"
+        },
+        "\\nleqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue011"
+        },
+        "\\lneq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a87"
+        },
+        "\\lneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2268"
+        },
+        "\\lvertneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue00c"
+        },
+        "\\lnsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22e6"
+        },
+        "\\lnapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a89"
+        },
+        "\\nprec": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2280"
+        },
+        "\\npreceq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22e0"
+        },
+        "\\precnsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22e8"
+        },
+        "\\precnapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2ab9"
+        },
+        "\\nsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2241"
+        },
+        "\\nshortmid": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue006"
+        },
+        "\\nmid": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2224"
+        },
+        "\\nvdash": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22ac"
+        },
+        "\\nvDash": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22ad"
+        },
+        "\\ntriangleleft": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22ea"
+        },
+        "\\ntrianglelefteq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22ec"
+        },
+        "\\subsetneq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u228a"
+        },
+        "\\varsubsetneq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue01a"
+        },
+        "\\subsetneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2acb"
+        },
+        "\\varsubsetneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue017"
+        },
+        "\\ngtr": {
+            font: "ams",
+            group: "rel",
+            replace: "\u226f"
+        },
+        "\\ngeqslant": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue00f"
+        },
+        "\\ngeqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue00e"
+        },
+        "\\gneq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a88"
+        },
+        "\\gneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2269"
+        },
+        "\\gvertneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue00d"
+        },
+        "\\gnsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22e7"
+        },
+        "\\gnapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a8a"
+        },
+        "\\nsucc": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2281"
+        },
+        "\\nsucceq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22e1"
+        },
+        "\\succnsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22e9"
+        },
+        "\\succnapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2aba"
+        },
+        "\\ncong": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2246"
+        },
+        "\\nshortparallel": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue007"
+        },
+        "\\nparallel": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2226"
+        },
+        "\\nVDash": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22af"
+        },
+        "\\ntriangleright": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22eb"
+        },
+        "\\ntrianglerighteq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22ed"
+        },
+        "\\nsupseteqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue018"
+        },
+        "\\supsetneq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u228b"
+        },
+        "\\varsupsetneq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue01b"
+        },
+        "\\supsetneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2acc"
+        },
+        "\\varsupsetneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue019"
+        },
+        "\\nVdash": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22ae"
+        },
+        "\\precneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2ab5"
+        },
+        "\\succneqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2ab6"
+        },
+        "\\nsubseteqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\ue016"
+        },
+        "\\unlhd": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22b4"
+        },
+        "\\unrhd": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22b5"
+        },
+
+        // AMS Negated Arrows
+         "\\nleftarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u219a"
+        },
+        "\\nrightarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u219b"
+        },
+        "\\nLeftarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21cd"
+        },
+        "\\nRightarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21cf"
+        },
+        "\\nleftrightarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21ae"
+        },
+        "\\nLeftrightarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21ce"
+        },
+
+        // AMS Misc
+        "\\vartriangle": {
+            font: "ams",
+            group: "rel",
+            replace: "\u25b3"
+        },
+        "\\hslash": {
+            font: "ams",
+            group: "textord",
+            replace: "\u210f"
+        },
+        "\\triangledown": {
+            font: "ams",
+            group: "textord",
+            replace: "\u25bd"
+        },
+        "\\lozenge": {
+            font: "ams",
+            group: "textord",
+            replace: "\u25ca"
+        },
+        "\\circledS": {
+            font: "ams",
+            group: "textord",
+            replace: "\u24c8"
+        },
+        "\\circledR": {
+            font: "ams",
+            group: "textord",
+            replace: "\u00ae"
+        },
+        "\\measuredangle": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2221"
+        },
+        "\\nexists": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2204"
+        },
+        "\\mho": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2127"
+        },
+        "\\Finv": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2132"
+        },
+        "\\Game": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2141"
+        },
+        "\\Bbbk": {
+            font: "ams",
+            group: "textord",
+            replace: "\u006b"
+        },
+        "\\backprime": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2035"
+        },
+        "\\blacktriangle": {
+            font: "ams",
+            group: "textord",
+            replace: "\u25b2"
+        },
+        "\\blacktriangledown": {
+            font: "ams",
+            group: "textord",
+            replace: "\u25bc"
+        },
+        "\\blacksquare": {
+            font: "ams",
+            group: "textord",
+            replace: "\u25a0"
+        },
+        "\\blacklozenge": {
+            font: "ams",
+            group: "textord",
+            replace: "\u29eb"
+        },
+        "\\bigstar": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2605"
+        },
+        "\\sphericalangle": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2222"
+        },
+        "\\complement": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2201"
+        },
+        "\\eth": {
+            font: "ams",
+            group: "textord",
+            replace: "\u00f0"
+        },
+        "\\diagup": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2571"
+        },
+        "\\diagdown": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2572"
+        },
+        "\\square": {
+            font: "ams",
+            group: "textord",
+            replace: "\u25a1"
+        },
+        "\\Box": {
+            font: "ams",
+            group: "textord",
+            replace: "\u25a1"
+        },
+        "\\Diamond": {
+            font: "ams",
+            group: "textord",
+            replace: "\u25ca"
+        },
+        "\\yen": {
+            font: "ams",
+            group: "textord",
+            replace: "\u00a5"
+        },
+        "\\checkmark": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2713"
+        },
+
+        // AMS Hebrew
+        "\\beth": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2136"
+        },
+        "\\daleth": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2138"
+        },
+        "\\gimel": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2137"
+        },
+
+        // AMS Greek
+        "\\digamma": {
+            font: "ams",
+            group: "textord",
+            replace: "\u03dd"
+        },
+        "\\varkappa": {
+            font: "ams",
+            group: "textord",
+            replace: "\u03f0"
+        },
+
+        // AMS Delimiters
+        "\\ulcorner": {
+            font: "ams",
+            group: "textord",
+            replace: "\u250c"
+        },
+        "\\urcorner": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2510"
+        },
+        "\\llcorner": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2514"
+        },
+        "\\lrcorner": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2518"
+        },
+
+        // AMS Binary Relations
+        "\\leqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2266"
+        },
+        "\\leqslant": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a7d"
+        },
+        "\\eqslantless": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a95"
+        },
+        "\\lesssim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2272"
+        },
+        "\\lessapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a85"
+        },
+        "\\approxeq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u224a"
+        },
+        "\\lessdot": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22d6"
+        },
+        "\\lll": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22d8"
+        },
+        "\\lessgtr": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2276"
+        },
+        "\\lesseqgtr": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22da"
+        },
+        "\\lesseqqgtr": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a8b"
+        },
+        "\\doteqdot": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2251"
+        },
+        "\\risingdotseq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2253"
+        },
+        "\\fallingdotseq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2252"
+        },
+        "\\backsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u223d"
+        },
+        "\\backsimeq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22cd"
+        },
+        "\\subseteqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2ac5"
+        },
+        "\\Subset": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22d0"
+        },
+        "\\sqsubset": {
+            font: "ams",
+            group: "rel",
+            replace: "\u228f"
+        },
+        "\\preccurlyeq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u227c"
+        },
+        "\\curlyeqprec": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22de"
+        },
+        "\\precsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u227e"
+        },
+        "\\precapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2ab7"
+        },
+        "\\vartriangleleft": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22b2"
+        },
+        "\\trianglelefteq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22b4"
+        },
+        "\\vDash": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22a8"
+        },
+        "\\Vvdash": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22aa"
+        },
+        "\\smallsmile": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2323"
+        },
+        "\\smallfrown": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2322"
+        },
+        "\\bumpeq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u224f"
+        },
+        "\\Bumpeq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u224e"
+        },
+        "\\geqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2267"
+        },
+        "\\geqslant": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a7e"
+        },
+        "\\eqslantgtr": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a96"
+        },
+        "\\gtrsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2273"
+        },
+        "\\gtrapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a86"
+        },
+        "\\gtrdot": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22d7"
+        },
+        "\\ggg": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22d9"
+        },
+        "\\gtrless": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2277"
+        },
+        "\\gtreqless": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22db"
+        },
+        "\\gtreqqless": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2a8c"
+        },
+        "\\eqcirc": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2256"
+        },
+        "\\circeq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2257"
+        },
+        "\\triangleq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u225c"
+        },
+        "\\thicksim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u223c"
+        },
+        "\\thickapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2248"
+        },
+        "\\supseteqq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2ac6"
+        },
+        "\\Supset": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22d1"
+        },
+        "\\sqsupset": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2290"
+        },
+        "\\succcurlyeq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u227d"
+        },
+        "\\curlyeqsucc": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22df"
+        },
+        "\\succsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u227f"
+        },
+        "\\succapprox": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2ab8"
+        },
+        "\\vartriangleright": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22b3"
+        },
+        "\\trianglerighteq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22b5"
+        },
+        "\\Vdash": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22a9"
+        },
+        "\\shortmid": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2223"
+        },
+        "\\shortparallel": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2225"
+        },
+        "\\between": {
+            font: "ams",
+            group: "rel",
+            replace: "\u226c"
+        },
+        "\\pitchfork": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22d4"
+        },
+        "\\varpropto": {
+            font: "ams",
+            group: "rel",
+            replace: "\u221d"
+        },
+        "\\blacktriangleleft": {
+            font: "ams",
+            group: "rel",
+            replace: "\u25c0"
+        },
+        "\\therefore": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2234"
+        },
+        "\\backepsilon": {
+            font: "ams",
+            group: "rel",
+            replace: "\u220d"
+        },
+        "\\blacktriangleright": {
+            font: "ams",
+            group: "rel",
+            replace: "\u25b6"
+        },
+        "\\because": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2235"
+        },
+        "\\llless": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22d8"
+        },
+        "\\gggtr": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22d9"
+        },
+        "\\lhd": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22b2"
+        },
+        "\\rhd": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22b3"
+        },
+        "\\eqsim": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2242"
+        },
+        "\\Join": {
+            font: "main",
+            group: "rel",
+            replace: "\u22c8"
+        },
+        "\\Doteq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2251"
+        },
+
+        // AMS Binary Operators
+        "\\dotplus": {
+            font: "ams",
+            group: "bin",
+            replace: "\u2214"
+        },
+        "\\smallsetminus": {
+            font: "ams",
+            group: "bin",
+            replace: "\u2216"
+        },
+        "\\Cap": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22d2"
+        },
+        "\\Cup": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22d3"
+        },
+        "\\doublebarwedge": {
+            font: "ams",
+            group: "bin",
+            replace: "\u2a5e"
+        },
+        "\\boxminus": {
+            font: "ams",
+            group: "bin",
+            replace: "\u229f"
+        },
+        "\\boxplus": {
+            font: "ams",
+            group: "bin",
+            replace: "\u229e"
+        },
+        "\\divideontimes": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22c7"
+        },
+        "\\ltimes": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22c9"
+        },
+        "\\rtimes": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22ca"
+        },
+        "\\leftthreetimes": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22cb"
+        },
+        "\\rightthreetimes": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22cc"
+        },
+        "\\curlywedge": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22cf"
+        },
+        "\\curlyvee": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22ce"
+        },
+        "\\circleddash": {
+            font: "ams",
+            group: "bin",
+            replace: "\u229d"
+        },
+        "\\circledast": {
+            font: "ams",
+            group: "bin",
+            replace: "\u229b"
+        },
+        "\\centerdot": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22c5"
+        },
+        "\\intercal": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22ba"
+        },
+        "\\doublecap": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22d2"
+        },
+        "\\doublecup": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22d3"
+        },
+        "\\boxtimes": {
+            font: "ams",
+            group: "bin",
+            replace: "\u22a0"
+        },
+
+        // AMS Arrows
+        "\\dashrightarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21e2"
+        },
+        "\\dashleftarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21e0"
+        },
+        "\\leftleftarrows": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21c7"
+        },
+        "\\leftrightarrows": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21c6"
+        },
+        "\\Lleftarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21da"
+        },
+        "\\twoheadleftarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u219e"
+        },
+        "\\leftarrowtail": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21a2"
+        },
+        "\\looparrowleft": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21ab"
+        },
+        "\\leftrightharpoons": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21cb"
+        },
+        "\\curvearrowleft": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21b6"
+        },
+        "\\circlearrowleft": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21ba"
+        },
+        "\\Lsh": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21b0"
+        },
+        "\\upuparrows": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21c8"
+        },
+        "\\upharpoonleft": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21bf"
+        },
+        "\\downharpoonleft": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21c3"
+        },
+        "\\multimap": {
+            font: "ams",
+            group: "rel",
+            replace: "\u22b8"
+        },
+        "\\leftrightsquigarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21ad"
+        },
+        "\\rightrightarrows": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21c9"
+        },
+        "\\rightleftarrows": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21c4"
+        },
+        "\\twoheadrightarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21a0"
+        },
+        "\\rightarrowtail": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21a3"
+        },
+        "\\looparrowright": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21ac"
+        },
+        "\\curvearrowright": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21b7"
+        },
+        "\\circlearrowright": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21bb"
+        },
+        "\\Rsh": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21b1"
+        },
+        "\\downdownarrows": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21ca"
+        },
+        "\\upharpoonright": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21be"
+        },
+        "\\downharpoonright": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21c2"
+        },
+        "\\rightsquigarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21dd"
+        },
+        "\\leadsto": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21dd"
+        },
+        "\\Rrightarrow": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21db"
+        },
+        "\\restriction": {
+            font: "ams",
+            group: "rel",
+            replace: "\u21be"
+        },
+
+        "`": {
+            font: "main",
+            group: "textord",
+            replace: "\u2018"
+        },
+        "\\$": {
+            font: "main",
+            group: "textord",
+            replace: "$"
+        },
+        "\\%": {
+            font: "main",
+            group: "textord",
+            replace: "%"
+        },
+        "\\_": {
+            font: "main",
+            group: "textord",
+            replace: "_"
+        },
+        "\\angle": {
+            font: "main",
+            group: "textord",
+            replace: "\u2220"
+        },
+        "\\infty": {
+            font: "main",
+            group: "textord",
+            replace: "\u221e"
+        },
+        "\\prime": {
+            font: "main",
+            group: "textord",
+            replace: "\u2032"
+        },
+        "\\triangle": {
+            font: "main",
+            group: "textord",
+            replace: "\u25b3"
+        },
+        "\\Gamma": {
+            font: "main",
+            group: "textord",
+            replace: "\u0393"
+        },
+        "\\Delta": {
+            font: "main",
+            group: "textord",
+            replace: "\u0394"
+        },
+        "\\Theta": {
+            font: "main",
+            group: "textord",
+            replace: "\u0398"
+        },
+        "\\Lambda": {
+            font: "main",
+            group: "textord",
+            replace: "\u039b"
+        },
+        "\\Xi": {
+            font: "main",
+            group: "textord",
+            replace: "\u039e"
+        },
+        "\\Pi": {
+            font: "main",
+            group: "textord",
+            replace: "\u03a0"
+        },
+        "\\Sigma": {
+            font: "main",
+            group: "textord",
+            replace: "\u03a3"
+        },
+        "\\Upsilon": {
+            font: "main",
+            group: "textord",
+            replace: "\u03a5"
+        },
+        "\\Phi": {
+            font: "main",
+            group: "textord",
+            replace: "\u03a6"
+        },
+        "\\Psi": {
+            font: "main",
+            group: "textord",
+            replace: "\u03a8"
+        },
+        "\\Omega": {
+            font: "main",
+            group: "textord",
+            replace: "\u03a9"
+        },
+        "\\neg": {
+            font: "main",
+            group: "textord",
+            replace: "\u00ac"
+        },
+        "\\lnot": {
+            font: "main",
+            group: "textord",
+            replace: "\u00ac"
+        },
+        "\\top": {
+            font: "main",
+            group: "textord",
+            replace: "\u22a4"
+        },
+        "\\bot": {
+            font: "main",
+            group: "textord",
+            replace: "\u22a5"
+        },
+        "\\emptyset": {
+            font: "main",
+            group: "textord",
+            replace: "\u2205"
+        },
+        "\\varnothing": {
+            font: "ams",
+            group: "textord",
+            replace: "\u2205"
+        },
+        "\\alpha": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b1"
+        },
+        "\\beta": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b2"
+        },
+        "\\gamma": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b3"
+        },
+        "\\delta": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b4"
+        },
+        "\\epsilon": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03f5"
+        },
+        "\\zeta": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b6"
+        },
+        "\\eta": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b7"
+        },
+        "\\theta": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b8"
+        },
+        "\\iota": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b9"
+        },
+        "\\kappa": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03ba"
+        },
+        "\\lambda": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03bb"
+        },
+        "\\mu": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03bc"
+        },
+        "\\nu": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03bd"
+        },
+        "\\xi": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03be"
+        },
+        "\\omicron": {
+            font: "main",
+            group: "mathord",
+            replace: "o"
+        },
+        "\\pi": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c0"
+        },
+        "\\rho": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c1"
+        },
+        "\\sigma": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c3"
+        },
+        "\\tau": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c4"
+        },
+        "\\upsilon": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c5"
+        },
+        "\\phi": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03d5"
+        },
+        "\\chi": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c7"
+        },
+        "\\psi": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c8"
+        },
+        "\\omega": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c9"
+        },
+        "\\varepsilon": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03b5"
+        },
+        "\\vartheta": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03d1"
+        },
+        "\\varpi": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03d6"
+        },
+        "\\varrho": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03f1"
+        },
+        "\\varsigma": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c2"
+        },
+        "\\varphi": {
+            font: "main",
+            group: "mathord",
+            replace: "\u03c6"
+        },
+        "*": {
+            font: "main",
+            group: "bin",
+            replace: "\u2217"
+        },
+        "+": {
+            font: "main",
+            group: "bin"
+        },
+        "-": {
+            font: "main",
+            group: "bin",
+            replace: "\u2212"
+        },
+        "\\cdot": {
+            font: "main",
+            group: "bin",
+            replace: "\u22c5"
+        },
+        "\\circ": {
+            font: "main",
+            group: "bin",
+            replace: "\u2218"
+        },
+        "\\div": {
+            font: "main",
+            group: "bin",
+            replace: "\u00f7"
+        },
+        "\\pm": {
+            font: "main",
+            group: "bin",
+            replace: "\u00b1"
+        },
+        "\\times": {
+            font: "main",
+            group: "bin",
+            replace: "\u00d7"
+        },
+        "\\cap": {
+            font: "main",
+            group: "bin",
+            replace: "\u2229"
+        },
+        "\\cup": {
+            font: "main",
+            group: "bin",
+            replace: "\u222a"
+        },
+        "\\setminus": {
+            font: "main",
+            group: "bin",
+            replace: "\u2216"
+        },
+        "\\land": {
+            font: "main",
+            group: "bin",
+            replace: "\u2227"
+        },
+        "\\lor": {
+            font: "main",
+            group: "bin",
+            replace: "\u2228"
+        },
+        "\\wedge": {
+            font: "main",
+            group: "bin",
+            replace: "\u2227"
+        },
+        "\\vee": {
+            font: "main",
+            group: "bin",
+            replace: "\u2228"
+        },
+        "\\surd": {
+            font: "main",
+            group: "textord",
+            replace: "\u221a"
+        },
+        "(": {
+            font: "main",
+            group: "open"
+        },
+        "[": {
+            font: "main",
+            group: "open"
+        },
+        "\\langle": {
+            font: "main",
+            group: "open",
+            replace: "\u27e8"
+        },
+        "\\lvert": {
+            font: "main",
+            group: "open",
+            replace: "\u2223"
+        },
+        ")": {
+            font: "main",
+            group: "close"
+        },
+        "]": {
+            font: "main",
+            group: "close"
+        },
+        "?": {
+            font: "main",
+            group: "close"
+        },
+        "!": {
+            font: "main",
+            group: "close"
+        },
+        "\\rangle": {
+            font: "main",
+            group: "close",
+            replace: "\u27e9"
+        },
+        "\\rvert": {
+            font: "main",
+            group: "close",
+            replace: "\u2223"
+        },
+        "=": {
+            font: "main",
+            group: "rel"
+        },
+        "<": {
+            font: "main",
+            group: "rel"
+        },
+        ">": {
+            font: "main",
+            group: "rel"
+        },
+        ":": {
+            font: "main",
+            group: "rel"
+        },
+        "\\approx": {
+            font: "main",
+            group: "rel",
+            replace: "\u2248"
+        },
+        "\\cong": {
+            font: "main",
+            group: "rel",
+            replace: "\u2245"
+        },
+        "\\ge": {
+            font: "main",
+            group: "rel",
+            replace: "\u2265"
+        },
+        "\\geq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2265"
+        },
+        "\\gets": {
+            font: "main",
+            group: "rel",
+            replace: "\u2190"
+        },
+        "\\in": {
+            font: "main",
+            group: "rel",
+            replace: "\u2208"
+        },
+        "\\notin": {
+            font: "main",
+            group: "rel",
+            replace: "\u2209"
+        },
+        "\\subset": {
+            font: "main",
+            group: "rel",
+            replace: "\u2282"
+        },
+        "\\supset": {
+            font: "main",
+            group: "rel",
+            replace: "\u2283"
+        },
+        "\\subseteq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2286"
+        },
+        "\\supseteq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2287"
+        },
+        "\\nsubseteq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2288"
+        },
+        "\\nsupseteq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2289"
+        },
+        "\\models": {
+            font: "main",
+            group: "rel",
+            replace: "\u22a8"
+        },
+        "\\leftarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u2190"
+        },
+        "\\le": {
+            font: "main",
+            group: "rel",
+            replace: "\u2264"
+        },
+        "\\leq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2264"
+        },
+        "\\ne": {
+            font: "main",
+            group: "rel",
+            replace: "\u2260"
+        },
+        "\\neq": {
+            font: "main",
+            group: "rel",
+            replace: "\u2260"
+        },
+        "\\rightarrow": {
+            font: "main",
+            group: "rel",
+            replace: "\u2192"
+        },
+        "\\to": {
+            font: "main",
+            group: "rel",
+            replace: "\u2192"
+        },
+        "\\ngeq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2271"
+        },
+        "\\nleq": {
+            font: "ams",
+            group: "rel",
+            replace: "\u2270"
+        },
+        "\\!": {
+            font: "main",
+            group: "spacing"
+        },
+        "\\ ": {
+            font: "main",
+            group: "spacing",
+            replace: "\u00a0"
+        },
+        "~": {
+            font: "main",
+            group: "spacing",
+            replace: "\u00a0"
+        },
+        "\\,": {
+            font: "main",
+            group: "spacing"
+        },
+        "\\:": {
+            font: "main",
+            group: "spacing"
+        },
+        "\\;": {
+            font: "main",
+            group: "spacing"
+        },
+        "\\enspace": {
+            font: "main",
+            group: "spacing"
+        },
+        "\\qquad": {
+            font: "main",
+            group: "spacing"
+        },
+        "\\quad": {
+            font: "main",
+            group: "spacing"
+        },
+        "\\space": {
+            font: "main",
+            group: "spacing",
+            replace: "\u00a0"
+        },
+        ",": {
+            font: "main",
+            group: "punct"
+        },
+        ";": {
+            font: "main",
+            group: "punct"
+        },
+        "\\colon": {
+            font: "main",
+            group: "punct",
+            replace: ":"
+        },
+        "\\barwedge": {
+            font: "ams",
+            group: "textord",
+            replace: "\u22bc"
+        },
+        "\\veebar": {
+            font: "ams",
+            group: "textord",
+            replace: "\u22bb"
+        },
+        "\\odot": {
+            font: "main",
+            group: "bin",
+            replace: "\u2299"
+        },
+        "\\oplus": {
+            font: "main",
+            group: "bin",
+            replace: "\u2295"
+        },
+        "\\otimes": {
+            font: "main",
+            group: "bin",
+            replace: "\u2297"
+        },
+        "\\partial":{
+            font: "main",
+            group: "textord",
+            replace: "\u2202"
+        },
+        "\\oslash": {
+            font: "main",
+            group: "bin",
+            replace: "\u2298"
+        },
+        "\\circledcirc": {
+            font: "ams",
+            group: "textord",
+            replace: "\u229a"
+        },
+        "\\boxdot": {
+            font: "ams",
+            group: "textord",
+            replace: "\u22a1"
+        },
+        "\\bigtriangleup": {
+            font: "main",
+            group: "bin",
+            replace: "\u25b3"
+        },
+        "\\bigtriangledown": {
+            font: "main",
+            group: "bin",
+            replace: "\u25bd"
+        },
+        "\\dagger": {
+            font: "main",
+            group: "bin",
+            replace: "\u2020"
+        },
+        "\\diamond": {
+            font: "main",
+            group: "bin",
+            replace: "\u22c4"
+        },
+        "\\star": {
+            font: "main",
+            group: "bin",
+            replace: "\u22c6"
+        },
+        "\\triangleleft": {
+            font: "main",
+            group: "bin",
+            replace: "\u25c3"
+        },
+        "\\triangleright": {
+            font: "main",
+            group: "bin",
+            replace: "\u25b9"
+        },
+        "\\{": {
+            font: "main",
+            group: "open",
+            replace: "{"
+        },
+        "\\}": {
+            font: "main",
+            group: "close",
+            replace: "}"
+        },
+        "\\lbrace": {
+            font: "main",
+            group: "open",
+            replace: "{"
+        },
+        "\\rbrace": {
+            font: "main",
+            group: "close",
+            replace: "}"
+        },
+        "\\lbrack": {
+            font: "main",
+            group: "open",
+            replace: "["
+        },
+        "\\rbrack": {
+            font: "main",
+            group: "close",
+            replace: "]"
+        },
+        "\\lfloor": {
+            font: "main",
+            group: "open",
+            replace: "\u230a"
+        },
+        "\\rfloor": {
+            font: "main",
+            group: "close",
+            replace: "\u230b"
+        },
+        "\\lceil": {
+            font: "main",
+            group: "open",
+            replace: "\u2308"
+        },
+        "\\rceil": {
+            font: "main",
+            group: "close",
+            replace: "\u2309"
+        },
+        "\\backslash": {
+            font: "main",
+            group: "textord",
+            replace: "\\"
+        },
+        "|": {
+            font: "main",
+            group: "textord",
+            replace: "\u2223"
+        },
+        "\\vert": {
+            font: "main",
+            group: "textord",
+            replace: "\u2223"
+        },
+        "\\|": {
+            font: "main",
+            group: "textord",
+            replace: "\u2225"
+        },
+        "\\Vert": {
+            font: "main",
+            group: "textord",
+            replace: "\u2225"
+        },
+        "\\uparrow": {
+            font: "main",
+            group: "textord",
+            replace: "\u2191"
+        },
+        "\\Uparrow": {
+            font: "main",
+            group: "textord",
+            replace: "\u21d1"
+        },
+        "\\downarrow": {
+            font: "main",
+            group: "textord",
+            replace: "\u2193"
+        },
+        "\\Downarrow": {
+            font: "main",
+            group: "textord",
+            replace: "\u21d3"
+        },
+        "\\updownarrow": {
+            font: "main",
+            group: "textord",
+            replace: "\u2195"
+        },
+        "\\Updownarrow": {
+            font: "main",
+            group: "textord",
+            replace: "\u21d5"
+        },
+        "\\coprod": {
+            font: "math",
+            group: "op",
+            replace: "\u2210"
+        },
+        "\\bigvee": {
+            font: "math",
+            group: "op",
+            replace: "\u22c1"
+        },
+        "\\bigwedge": {
+            font: "math",
+            group: "op",
+            replace: "\u22c0"
+        },
+        "\\biguplus": {
+            font: "math",
+            group: "op",
+            replace: "\u2a04"
+        },
+        "\\bigcap": {
+            font: "math",
+            group: "op",
+            replace: "\u22c2"
+        },
+        "\\bigcup": {
+            font: "math",
+            group: "op",
+            replace: "\u22c3"
+        },
+        "\\int": {
+            font: "math",
+            group: "op",
+            replace: "\u222b"
+        },
+        "\\intop": {
+            font: "math",
+            group: "op",
+            replace: "\u222b"
+        },
+        "\\iint": {
+            font: "math",
+            group: "op",
+            replace: "\u222c"
+        },
+        "\\iiint": {
+            font: "math",
+            group: "op",
+            replace: "\u222d"
+        },
+        "\\prod": {
+            font: "math",
+            group: "op",
+            replace: "\u220f"
+        },
+        "\\sum": {
+            font: "math",
+            group: "op",
+            replace: "\u2211"
+        },
+        "\\bigotimes": {
+            font: "math",
+            group: "op",
+            replace: "\u2a02"
+        },
+        "\\bigoplus": {
+            font: "math",
+            group: "op",
+            replace: "\u2a01"
+        },
+        "\\bigodot": {
+            font: "math",
+            group: "op",
+            replace: "\u2a00"
+        },
+        "\\oint": {
+            font: "math",
+            group: "op",
+            replace: "\u222e"
+        },
+        "\\bigsqcup": {
+            font: "math",
+            group: "op",
+            replace: "\u2a06"
+        },
+        "\\smallint": {
+            font: "math",
+            group: "op",
+            replace: "\u222b"
+        },
+        "\\ldots": {
+            font: "main",
+            group: "punct",
+            replace: "\u2026"
+        },
+        "\\cdots": {
+            font: "main",
+            group: "inner",
+            replace: "\u22ef"
+        },
+        "\\ddots": {
+            font: "main",
+            group: "inner",
+            replace: "\u22f1"
+        },
+        "\\vdots": {
+            font: "main",
+            group: "textord",
+            replace: "\u22ee"
+        },
+        "\\acute": {
+            font: "main",
+            group: "accent",
+            replace: "\u00b4"
+        },
+        "\\grave": {
+            font: "main",
+            group: "accent",
+            replace: "\u0060"
+        },
+        "\\ddot": {
+            font: "main",
+            group: "accent",
+            replace: "\u00a8"
+        },
+        "\\tilde": {
+            font: "main",
+            group: "accent",
+            replace: "\u007e"
+        },
+        "\\bar": {
+            font: "main",
+            group: "accent",
+            replace: "\u00af"
+        },
+        "\\breve": {
+            font: "main",
+            group: "accent",
+            replace: "\u02d8"
+        },
+        "\\check": {
+            font: "main",
+            group: "accent",
+            replace: "\u02c7"
+        },
+        "\\hat": {
+            font: "main",
+            group: "accent",
+            replace: "\u005e"
+        },
+        "\\vec": {
+            font: "main",
+            group: "accent",
+            replace: "\u20d7"
+        },
+        "\\dot": {
+            font: "main",
+            group: "accent",
+            replace: "\u02d9"
+        },
+
+        "\\imath": {
+            font: "main",
+            group: "mathord",
+            replace: "\u0131"
+        },
+        "\\jmath": {
+            font: "main",
+            group: "mathord",
+            replace: "\u0237"
+        }
+    },
+    "text": {
+        "\\ ": {
+            font: "main",
+            group: "spacing",
+            replace: "\u00a0"
+        },
+        " ": {
+            font: "main",
+            group: "spacing",
+            replace: "\u00a0"
+        },
+        "~": {
+            font: "main",
+            group: "spacing",
+            replace: "\u00a0"
+        }
+    }
+};
+
+// There are lots of symbols which are the same, so we add them in afterwards.
+
+// All of these are textords in math mode
+var mathTextSymbols = "0123456789/@.\"";
+for (var i = 0; i < mathTextSymbols.length; i++) {
+    var ch = mathTextSymbols.charAt(i);
+    symbols.math[ch] = {
+        font: "main",
+        group: "textord"
+    };
+}
+
+// All of these are textords in text mode
+var textSymbols = "0123456789`!@*()-=+[]'\";:?/.,";
+for (var i = 0; i < textSymbols.length; i++) {
+    var ch = textSymbols.charAt(i);
+    symbols.text[ch] = {
+        font: "main",
+        group: "textord"
+    };
+}
+
+// All of these are textords in text mode, and mathords in math mode
+var letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+for (var i = 0; i < letters.length; i++) {
+    var ch = letters.charAt(i);
+    symbols.math[ch] = {
+        font: "main",
+        group: "mathord"
+    };
+    symbols.text[ch] = {
+        font: "main",
+        group: "textord"
+    };
+}
+
+module.exports = symbols;
+
+},{}],22:[function(require,module,exports){
+/**
+ * This file contains a list of utility functions which are useful in other
+ * files.
+ */
+
+/**
+ * Provide an `indexOf` function which works in IE8, but defers to native if
+ * possible.
+ */
+var nativeIndexOf = Array.prototype.indexOf;
+var indexOf = function(list, elem) {
+    if (list == null) {
+        return -1;
+    }
+    if (nativeIndexOf && list.indexOf === nativeIndexOf) {
+        return list.indexOf(elem);
+    }
+    var i = 0, l = list.length;
+    for (; i < l; i++) {
+        if (list[i] === elem) {
+            return i;
+        }
+    }
+    return -1;
+};
+
+/**
+ * Return whether an element is contained in a list
+ */
+var contains = function(list, elem) {
+    return indexOf(list, elem) !== -1;
+};
+
+/**
+ * Provide a default value if a setting is undefined
+ */
+var deflt = function(setting, defaultIfUndefined) {
+    return setting === undefined ? defaultIfUndefined : setting;
+};
+
+// hyphenate and escape adapted from Facebook's React under Apache 2 license
+
+var uppercase = /([A-Z])/g;
+var hyphenate = function(str) {
+    return str.replace(uppercase, "-$1").toLowerCase();
+};
+
+var ESCAPE_LOOKUP = {
+  "&": "&amp;",
+  ">": "&gt;",
+  "<": "&lt;",
+  "\"": "&quot;",
+  "'": "&#x27;"
+};
+
+var ESCAPE_REGEX = /[&><"']/g;
+
+function escaper(match) {
+  return ESCAPE_LOOKUP[match];
+}
+
+/**
+ * Escapes text to prevent scripting attacks.
+ *
+ * @param {*} text Text value to escape.
+ * @return {string} An escaped string.
+ */
+function escape(text) {
+  return ("" + text).replace(ESCAPE_REGEX, escaper);
+}
+
+/**
+ * A function to set the text content of a DOM element in all supported
+ * browsers. Note that we don't define this if there is no document.
+ */
+var setTextContent;
+if (typeof document !== "undefined") {
+    var testNode = document.createElement("span");
+    if ("textContent" in testNode) {
+        setTextContent = function(node, text) {
+            node.textContent = text;
+        };
+    } else {
+        setTextContent = function(node, text) {
+            node.innerText = text;
+        };
+    }
+}
+
+/**
+ * A function to clear a node.
+ */
+function clearNode(node) {
+    setTextContent(node, "");
+}
+
+module.exports = {
+    contains: contains,
+    deflt: deflt,
+    escape: escape,
+    hyphenate: hyphenate,
+    indexOf: indexOf,
+    setTextContent: setTextContent,
+    clearNode: clearNode
+};
+
+},{}]},{},[1])
+(1)
+});
+;
\ No newline at end of file
diff --git a/client/katex/katex.less.css b/client/katex/katex.less.css
new file mode 100644
index 0000000..1eb7fb5
--- /dev/null
+++ b/client/katex/katex.less.css
@@ -0,0 +1,925 @@
+@font-face {
+  font-family: 'KaTeX_AMS';
+  src: url('fonts/KaTeX_AMS-Regular.eot');
+  src: url('fonts/KaTeX_AMS-Regular.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_AMS-Regular.woff2') format('woff2'), url('fonts/KaTeX_AMS-Regular.woff') format('woff'), url('fonts/KaTeX_AMS-Regular.ttf') format('ttf');
+  font-weight: normal;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Caligraphic';
+  src: url('fonts/KaTeX_Caligraphic-Bold.eot');
+  src: url('fonts/KaTeX_Caligraphic-Bold.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Caligraphic-Bold.woff2') format('woff2'), url('fonts/KaTeX_Caligraphic-Bold.woff') format('woff'), url('fonts/KaTeX_Caligraphic-Bold.ttf') format('ttf');
+  font-weight: bold;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Caligraphic';
+  src: url('fonts/KaTeX_Caligraphic-Regular.eot');
+  src: url('fonts/KaTeX_Caligraphic-Regular.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Caligraphic-Regular.woff2') format('woff2'), url('fonts/KaTeX_Caligraphic-Regular.woff') format('woff'), url('fonts/KaTeX_Caligraphic-Regular.ttf') format('ttf');
+  font-weight: normal;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Fraktur';
+  src: url('fonts/KaTeX_Fraktur-Bold.eot');
+  src: url('fonts/KaTeX_Fraktur-Bold.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Fraktur-Bold.woff2') format('woff2'), url('fonts/KaTeX_Fraktur-Bold.woff') format('woff'), url('fonts/KaTeX_Fraktur-Bold.ttf') format('ttf');
+  font-weight: bold;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Fraktur';
+  src: url('fonts/KaTeX_Fraktur-Regular.eot');
+  src: url('fonts/KaTeX_Fraktur-Regular.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Fraktur-Regular.woff2') format('woff2'), url('fonts/KaTeX_Fraktur-Regular.woff') format('woff'), url('fonts/KaTeX_Fraktur-Regular.ttf') format('ttf');
+  font-weight: normal;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Main';
+  src: url('fonts/KaTeX_Main-Bold.eot');
+  src: url('fonts/KaTeX_Main-Bold.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Main-Bold.woff2') format('woff2'), url('fonts/KaTeX_Main-Bold.woff') format('woff'), url('fonts/KaTeX_Main-Bold.ttf') format('ttf');
+  font-weight: bold;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Main';
+  src: url('fonts/KaTeX_Main-Italic.eot');
+  src: url('fonts/KaTeX_Main-Italic.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Main-Italic.woff2') format('woff2'), url('fonts/KaTeX_Main-Italic.woff') format('woff'), url('fonts/KaTeX_Main-Italic.ttf') format('ttf');
+  font-weight: normal;
+  font-style: italic;
+}
+@font-face {
+  font-family: 'KaTeX_Main';
+  src: url('fonts/KaTeX_Main-Regular.eot');
+  src: url('fonts/KaTeX_Main-Regular.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Main-Regular.woff2') format('woff2'), url('fonts/KaTeX_Main-Regular.woff') format('woff'), url('fonts/KaTeX_Main-Regular.ttf') format('ttf');
+  font-weight: normal;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Math';
+  src: url('fonts/KaTeX_Math-Italic.eot');
+  src: url('fonts/KaTeX_Math-Italic.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Math-Italic.woff2') format('woff2'), url('fonts/KaTeX_Math-Italic.woff') format('woff'), url('fonts/KaTeX_Math-Italic.ttf') format('ttf');
+  font-weight: normal;
+  font-style: italic;
+}
+@font-face {
+  font-family: 'KaTeX_SansSerif';
+  src: url('fonts/KaTeX_SansSerif-Regular.eot');
+  src: url('fonts/KaTeX_SansSerif-Regular.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_SansSerif-Regular.woff2') format('woff2'), url('fonts/KaTeX_SansSerif-Regular.woff') format('woff'), url('fonts/KaTeX_SansSerif-Regular.ttf') format('ttf');
+  font-weight: normal;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Script';
+  src: url('fonts/KaTeX_Script-Regular.eot');
+  src: url('fonts/KaTeX_Script-Regular.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Script-Regular.woff2') format('woff2'), url('fonts/KaTeX_Script-Regular.woff') format('woff'), url('fonts/KaTeX_Script-Regular.ttf') format('ttf');
+  font-weight: normal;
+  font-style: normal;
+}
+@font-face {
+  font-family: 'KaTeX_Size1';
+  src: url('fonts/KaTeX_Size1-Regular.eot');
+  src: url('fonts/KaTeX_Size1-Regular.eot#iefix') format('embedded-opentype'), url('fonts/KaTeX_Size1-Regular.woff2') format('woff2'), url('fonts/KaTeX_Size1-Regular.woff') format('woff'), url('fonts/KaTeX_Size1-Regular.ttf') format('ttf');
+  font-weight: normal;
+  font-style: normal;
+}
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u=1;n.prototype.handleSupSubscript=function(e,t,i,a){var r=this.parseGroup(e,t);if(!r){throw new c("Expected group after '"+i+"'",this.lexer,e)}else if(r.isFunction){var l=h.funcs[r.result.result].greediness;if(l>u){return this.parseFunction(e,t)}else{throw new c("Got function '"+r.result.result+"' with no arguments "+"as "+a,this.lexer,e)}}else{return r.result}};n.prototype.parseAtom=function(e,t){var i=this.parseImplicitGroup(e,t);if(t==="text"){return i}var h;if(!i){h=e;i=undefined}else{h=i.position}var a;var r;var l;while(true){var s=this.lexer.lex(h,t);if(s.text==="^"){if(a){throw new c("Double superscript",this.lexer,h)}l=this.handleSupSubscript(s.position,t,s.text,"superscript");h=l.position;a=l.result}else if(s.text==="_"){if(r){throw new c("Double subscript",this.lexer,h)}l=this.handleSupSubscript(s.position,t,s.text,"subscript");h=l.position;r=l.result}else if(s.text==="'"){var p=new g("textord","\\prime",t);var n=[p];h=s.position;while((s=this.lexer.lex(h,t)).text==="'"){n.push(p);h=s.position}a=new g("ordgroup",n,t)}else{break}}if(a||r){return new o(new g("supsub",{base:i&&i.result,sup:a,sub:r},t),h)}else{return i}};var k=["\\tiny","\\scriptsize","\\footnotesize","\\small","\\normalsize","\\large","\\Large","\\LARGE","\\huge","\\Huge"];var m=["\\displaystyle","\\textstyle","\\scriptstyle","\\scriptscriptstyle"];n.prototype.parseImplicitGroup=function(e,t){var i=this.parseSymbol(e,t);if(!i||!i.result){return this.parseFunction(e,t)}var h=i.result.result;var r;if(h==="\\left"){var l=this.parseFunction(e,t);r=this.parseExpression(l.position,t,false);this.expect(r.peek,"\\right");var p=this.parseFunction(r.position,t);return new o(new g("leftright",{body:r.result,left:l.result.value.value,right:p.result.value.value},t),p.position)}else if(h==="\\begin"){var n=this.parseFunction(e,t);var d=n.result.value.name;if(!a.hasOwnProperty(d)){throw new c("No such environment: "+d,this.lexer,n.result.value.namepos)}var w=a[d];var u=[null,t,d];var f=this.parseArguments(n.position,t,"\\begin{"+d+"}",w,u);u[0]=f;var v=w.handler.apply(this,u);var y=this.lexer.lex(v.position,t);this.expect(y,"\\end");var x=this.parseFunction(v.position,t);if(x.result.value.name!==d){throw new c("Mismatch: \\begin{"+d+"} matched "+"by \\end{"+x.result.value.name+"}",this.lexer,x.namepos)}v.position=x.position;return v}else if(s.contains(k,h)){r=this.parseExpression(i.result.position,t,false);return new o(new g("sizing",{size:"size"+(s.indexOf(k,h)+1),value:r.result},t),r.position)}else if(s.contains(m,h)){r=this.parseExpression(i.result.position,t,true);return new o(new g("styling",{style:h.slice(1,h.length-5),value:r.result},t),r.position)}else{return this.parseFunction(e,t)}};n.prototype.parseFunction=function(e,t){var i=this.parseGroup(e,t);if(i){if(i.isFunction){var a=i.result.result;var r=h.funcs[a];if(t==="text"&&!r.allowedInText){throw new c("Can't use function '"+a+"' in text mode",this.lexer,i.position)}var l=[a];var s=this.parseArguments(i.result.position,t,a,r,l);var p=h.funcs[a].handler.apply(this,l);return new o(new g(p.type,p,t),s)}else{return i.result}}else{return null}};n.prototype.parseArguments=function(e,t,i,a,r){var l=a.numArgs+a.numOptionalArgs;if(l===0){return e}var s=e;var p=a.greediness;var n=[s];for(var g=0;g<l;g++){var o=a.argTypes&&a.argTypes[g];var d;if(g<a.numOptionalArgs){if(o){d=this.parseSpecialGroup(s,o,t,true)}else{d=this.parseOptionalGroup(s,t)}if(!d){r.push(null);n.push(s);continue}}else{if(o){d=this.parseSpecialGroup(s,o,t)}else{d=this.parseGroup(s,t)}if(!d){throw new c("Expected group after '"+i+"'",this.lexer,s)}}var w;if(d.isFunction){var u=h.funcs[d.result.result].greediness;if(u>p){w=this.parseFunction(s,t)}else{throw new c("Got function '"+d.result.result+"' as "+"argument to '"+i+"'",this.lexer,d.result.position-1)}}else{w=d.result}r.push(w.result);n.push(w.position);s=w.position}r.push(n);return s};n.prototype.parseSpecialGroup=function(e,t,i,h){if(t==="original"){t=i}if(t==="color"||t==="size"){var a=this.lexer.lex(e,i);if(h&&a.text!=="["){return null}this.expect(a,h?"[":"{");var r=this.lexer.lex(a.position,t);var l;if(t==="color"){l=r.text}else{l=r.data}var s=this.lexer.lex(r.position,i);this.expect(s,h?"]":"}");return new d(new o(new g(t,l,i),s.position),false)}else if(t==="text"){var p=this.lexer.lex(e,"whitespace");e=p.position}if(h){return this.parseOptionalGroup(e,t)}else{return this.parseGroup(e,t)}};n.prototype.parseGroup=function(e,t){var i=this.lexer.lex(e,t);if(i.text==="{"){var h=this.parseExpression(i.position,t,false);var a=this.lexer.lex(h.position,t);this.expect(a,"}");return new d(new o(new g("ordgroup",h.result,t),a.position),false)}else{return this.parseSymbol(e,t)}};n.prototype.parseOptionalGroup=function(e,t){var i=this.lexer.lex(e,t);if(i.text==="["){var h=this.parseExpression(i.position,t,false,"]");var a=this.lexer.lex(h.position,t);this.expect(a,"]");return new d(new o(new g("ordgroup",h.result,t),a.position),false)}else{return null}};n.prototype.parseSymbol=function(e,t){var i=this.lexer.lex(e,t);if(h.funcs[i.text]){return new d(new o(i.text,i.position),true)}else if(l[t][i.text]){return new d(new o(new g(l[t][i.text].group,i.text,t),i.position),false)}else{return null}};n.prototype.ParseNode=g;t.exports=n},{"./Lexer":3,"./ParseError":5,"./environments":15,"./functions":17,"./parseData":19,"./symbols":21,"./utils":22}],7:[function(e,t,i){function h(e,t){return e===undefined?t:e}function a(e){e=e||{};this.displayMode=h(e.displayMode,false)}t.exports=a},{}],8:[function(e,t,i){function h(e,t,i,h){this.id=e;this.size=t;this.cramped=h;this.sizeMultiplier=i}h.prototype.sup=function(){return w[u[this.id]]};h.prototype.sub=function(){return w[k[this.id]]};h.prototype.fracNum=function(){return w[m[this.id]]};h.prototype.fracDen=function(){return w[f[this.id]]};h.prototype.cramp=function(){return w[v[this.id]]};h.prototype.cls=function(){return o[this.size]+(this.cramped?" cramped":" uncramped")};h.prototype.reset=function(){return d[this.size]};var a=0;var r=1;var l=2;var s=3;var p=4;var c=5;var n=6;var g=7;var o=["displaystyle textstyle","textstyle","scriptstyle","scriptscriptstyle"];var d=["reset-textstyle","reset-textstyle","reset-scriptstyle","reset-scriptscriptstyle"];var w=[new h(a,0,1,false),new h(r,0,1,true),new h(l,1,1,false),new h(s,1,1,true),new h(p,2,.7,false),new h(c,2,.7,true),new h(n,3,.5,false),new h(g,3,.5,true)];var u=[p,c,p,c,n,g,n,g];var k=[c,c,c,c,g,g,g,g];var m=[l,s,p,c,n,g,n,g];var f=[s,s,c,c,g,g,g,g];var v=[r,r,s,s,c,c,g,g];t.exports={DISPLAY:w[a],TEXT:w[l],SCRIPT:w[p],SCRIPTSCRIPT:w[n]}},{}],9:[function(e,t,i){var h=e("./domTree");var a=e("./fontMetrics");var r=e("./symbols");var l=e("./utils");var s=function(e,t,i,l,s){if(r[i][e]&&r[i][e].replace){e=r[i][e].replace}var p=a.getCharacterMetrics(e,t);var c;if(p){c=new h.symbolNode(e,p.height,p.depth,p.italic,p.skew,s)}else{typeof console!=="undefined"&&console.warn("No character metrics for '"+e+"' in style '"+t+"'");c=new h.symbolNode(e,0,0,0,0,s)}if(l){c.style.color=l}return c};var p=function(e,t,i,h){if(r[t][e].font==="main"){return s(e,"Main-Regular",t,i,h)}else{return s(e,"AMS-Regular",t,i,h.concat(["amsrm"]))}};var c=function(e,t,i,h,a){if(a==="mathord"){return n(e,t,i,h)}else if(a==="textord"){return s(e,"Main-Regular",t,i,h.concat(["mathrm"]))}else{throw new Error("unexpected type: "+a+" in mathDefault")}};var n=function(e,t,i,h){if(/[0-9]/.test(e.charAt(0))||l.contains(["\u0131","\u0237"],e)||l.contains(v,e)){return s(e,"Main-Italic",t,i,h.concat(["mainit"]))}else{return s(e,"Math-Italic",t,i,h.concat(["mathit"]))}};var g=function(e,t,i){var h=e.mode;var p=e.value;if(r[h][p]&&r[h][p].replace){p=r[h][p].replace}var g=["mord"];var o=t.getColor();var d=t.font;if(d){if(d==="mathit"||l.contains(["\u0131","\u0237"],p)){return n(p,h,o,g.concat(["mathit"]))}else{var w=y[d].fontName;if(a.getCharacterMetrics(p,w)){return s(p,w,h,o,g.concat([d]))}else{return c(p,h,o,g,i)}}}else{return c(p,h,o,g,i)}};var o=function(e){var t=0;var i=0;var h=0;if(e.children){for(var a=0;a<e.children.length;a++){if(e.children[a].height>t){t=e.children[a].height}if(e.children[a].depth>i){i=e.children[a].depth}if(e.children[a].maxFontSize>h){h=e.children[a].maxFontSize}}}e.height=t;e.depth=i;e.maxFontSize=h};var d=function(e,t,i){var a=new h.span(e,t);o(a);if(i){a.style.color=i}return a};var w=function(e){var t=new h.documentFragment(e);o(t);return t};var u=function(e,t){var i=d([],[new h.symbolNode("\u200b")]);i.style.fontSize=t/e.style.sizeMultiplier+"em";var a=d(["fontsize-ensurer","reset-"+e.size,"size5"],[i]);return a};var k=function(e,t,i,a){var r;var l;var s;if(t==="individualShift"){var p=e;e=[p[0]];r=-p[0].shift-p[0].elem.depth;l=r;for(s=1;s<p.length;s++){var c=-p[s].shift-l-p[s].elem.depth;var n=c-(p[s-1].elem.height+p[s-1].elem.depth);l=l+c;e.push({type:"kern",size:n});e.push(p[s])}}else if(t==="top"){var g=i;for(s=0;s<e.length;s++){if(e[s].type==="kern"){g-=e[s].size}else{g-=e[s].elem.height+e[s].elem.depth}}r=g}else if(t==="bottom"){r=-i}else if(t==="shift"){r=-e[0].elem.depth-i}else if(t==="firstBaseline"){r=-e[0].elem.depth}else{r=0}var o=0;for(s=0;s<e.length;s++){if(e[s].type==="elem"){o=Math.max(o,e[s].elem.maxFontSize)}}var w=u(a,o);var k=[];l=r;for(s=0;s<e.length;s++){if(e[s].type==="kern"){l+=e[s].size}else{var m=e[s].elem;var f=-m.depth-l;l+=m.height+m.depth;var v=d([],[w,m]);v.height-=f;v.depth+=f;v.style.top=f+"em";k.push(v)}}var y=d(["baseline-fix"],[w,new h.symbolNode("\u200b")]);k.push(y);var x=d(["vlist"],k);x.height=Math.max(l,x.height);x.depth=Math.max(-r,x.depth);return x};var m={size1:.5,size2:.7,size3:.8,size4:.9,size5:1,size6:1.2,size7:1.44,size8:1.73,size9:2.07,size10:2.49};var f={"\\qquad":{size:"2em",className:"qquad"},"\\quad":{size:"1em",className:"quad"},"\\enspace":{size:"0.5em",className:"enspace"},"\\;":{size:"0.277778em",className:"thickspace"},"\\:":{size:"0.22222em",className:"mediumspace"},"\\,":{size:"0.16667em",className:"thinspace"},"\\!":{size:"-0.16667em",className:"negativethinspace"}};var v=["\\Gamma","\\Delta","\\Theta","\\Lambda","\\Xi","\\Pi","\\Sigma","\\Upsilon","\\Phi","\\Psi","\\Omega"];var y={mathbf:{variant:"bold",fontName:"Main-Bold"},mathrm:{variant:"normal",fontName:"Main-Regular"},mathbb:{variant:"double-struck",fontName:"AMS-Regular"},mathcal:{variant:"script",fontName:"Caligraphic-Regular"},mathfrak:{variant:"fraktur",fontName:"Fraktur-Regular"},mathscr:{variant:"script",fontName:"Script-Regular"},mathsf:{variant:"sans-serif",fontName:"SansSerif-Regular"},mathtt:{variant:"monospace",fontName:"Typewriter-Regular"}};t.exports={makeSymbol:s,fontMap:y,mathsym:p,makeSpan:d,makeFragment:w,makeVList:k,makeOrd:g,sizingMultiplier:m,spacingFunctions:f}},{"./domTree":14,"./fontMetrics":16,"./symbols":21,"./utils":22}],10:[function(e,t,i){var h=e("./Options");var a=e("./ParseError");var r=e("./Style");var l=e("./buildCommon");var s=e("./delimiter");var p=e("./domTree");var c=e("./fontMetrics");var n=e("./utils");var g=l.makeSpan;var o=function(e,t,i){var h=[];for(var a=0;a<e.length;a++){var r=e[a];h.push(y(r,t,i));i=r}return h};var d={mathord:"mord",textord:"mord",bin:"mbin",rel:"mrel",text:"mord",open:"mopen",close:"mclose",inner:"minner",genfrac:"mord",array:"minner",spacing:"mord",punct:"mpunct",ordgroup:"mord",op:"mop",katex:"mord",overline:"mord",rule:"mord",leftright:"minner",sqrt:"mord",accent:"mord"};var w=function(e){if(e==null){return d.mathord}else if(e.type==="supsub"){return w(e.value.base)}else if(e.type==="llap"||e.type==="rlap"){return w(e.value)}else if(e.type==="color"){return w(e.value.value)}else if(e.type==="sizing"){return w(e.value.value)}else if(e.type==="styling"){return w(e.value.value)}else if(e.type==="delimsizing"){return d[e.value.delimType]}else{return d[e.type]}};var u=function(e,t){if(!e){return false}else if(e.type==="op"){return e.value.limits&&t.style.size===r.DISPLAY.size}else if(e.type==="accent"){return m(e.value.base)}else{return null}};var k=function(e){if(!e){return false}else if(e.type==="ordgroup"){if(e.value.length===1){return k(e.value[0])}else{return e}}else if(e.type==="color"){if(e.value.value.length===1){return k(e.value.value[0])}else{return e}}else{return e}};var m=function(e){var t=k(e);return t.type==="mathord"||t.type==="textord"||t.type==="bin"||t.type==="rel"||t.type==="inner"||t.type==="open"||t.type==="close"||t.type==="punct"};var f=function(e){return g(["sizing","reset-"+e.size,"size5",e.style.reset(),r.TEXT.cls(),"nulldelimiter"])};var v={mathord:function(e,t,i){return l.makeOrd(e,t,"mathord")},textord:function(e,t,i){return l.makeOrd(e,t,"textord")},bin:function(e,t,i){var h="mbin";var a=i;while(a&&a.type==="color"){var r=a.value.value;a=r[r.length-1]}if(!i||n.contains(["mbin","mopen","mrel","mop","mpunct"],w(a))){e.type="textord";h="mord"}return l.mathsym(e.value,e.mode,t.getColor(),[h])},rel:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["mrel"])},open:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["mopen"])},close:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["mclose"])},inner:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["minner"])},punct:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["mpunct"])},ordgroup:function(e,t,i){return g(["mord",t.style.cls()],o(e.value,t.reset()))},text:function(e,t,i){return g(["text","mord",t.style.cls()],o(e.value.body,t.reset()))},color:function(e,t,i){var h=o(e.value.value,t.withColor(e.value.color),i);return new l.makeFragment(h)},supsub:function(e,t,i){if(u(e.value.base,t)){return v[e.value.base.type](e,t,i)}var h=y(e.value.base,t.reset());var a,s,n,o;if(e.value.sup){n=y(e.value.sup,t.withStyle(t.style.sup()));a=g([t.style.reset(),t.style.sup().cls()],[n])}if(e.value.sub){o=y(e.value.sub,t.withStyle(t.style.sub()));s=g([t.style.reset(),t.style.sub().cls()],[o])}var d,k;if(m(e.value.base)){d=0;k=0}else{d=h.height-c.metrics.supDrop;k=h.depth+c.metrics.subDrop}var f;if(t.style===r.DISPLAY){f=c.metrics.sup1}else if(t.style.cramped){f=c.metrics.sup3}else{f=c.metrics.sup2}var x=r.TEXT.sizeMultiplier*t.style.sizeMultiplier;var b=.5/c.metrics.ptPerEm/x+"em";var z;if(!e.value.sup){k=Math.max(k,c.metrics.sub1,o.height-.8*c.metrics.xHeight);z=l.makeVList([{type:"elem",elem:s}],"shift",k,t);z.children[0].style.marginRight=b;if(h instanceof p.symbolNode){z.children[0].style.marginLeft=-h.italic+"em"}}else if(!e.value.sub){d=Math.max(d,f,n.depth+.25*c.metrics.xHeight);z=l.makeVList([{type:"elem",elem:a}],"shift",-d,t);z.children[0].style.marginRight=b}else{d=Math.max(d,f,n.depth+.25*c.metrics.xHeight);k=Math.max(k,c.metrics.sub2);var S=c.metrics.defaultRuleThickness;if(d-n.depth-(o.height-k)<4*S){k=4*S-(d-n.depth)+o.height;var M=.8*c.metrics.xHeight-(d-n.depth);if(M>0){d+=M;k-=M}}z=l.makeVList([{type:"elem",elem:s,shift:k},{type:"elem",elem:a,shift:-d}],"individualShift",null,t);if(h instanceof p.symbolNode){z.children[0].style.marginLeft=-h.italic+"em"}z.children[0].style.marginRight=b;z.children[1].style.marginRight=b}return g([w(e.value.base)],[h,z])},genfrac:function(e,t,i){var h=t.style;if(e.value.size==="display"){h=r.DISPLAY}else if(e.value.size==="text"){h=r.TEXT}var a=h.fracNum();var p=h.fracDen();var n=y(e.value.numer,t.withStyle(a));var o=g([h.reset(),a.cls()],[n]);var d=y(e.value.denom,t.withStyle(p));var w=g([h.reset(),p.cls()],[d]);var u;if(e.value.hasBarLine){u=c.metrics.defaultRuleThickness/t.style.sizeMultiplier}else{u=0}var k;var m;var v;if(h.size===r.DISPLAY.size){k=c.metrics.num1;if(u>0){m=3*u}else{m=7*c.metrics.defaultRuleThickness}v=c.metrics.denom1}else{if(u>0){k=c.metrics.num2;m=u}else{k=c.metrics.num3;m=3*c.metrics.defaultRuleThickness}v=c.metrics.denom2}var x;if(u===0){var b=k-n.depth-(d.height-v);if(b<m){k+=.5*(m-b);v+=.5*(m-b)}x=l.makeVList([{type:"elem",elem:w,shift:v},{type:"elem",elem:o,shift:-k}],"individualShift",null,t)}else{var z=c.metrics.axisHeight;if(k-n.depth-(z+.5*u)<m){k+=m-(k-n.depth-(z+.5*u))}if(z-.5*u-(d.height-v)<m){v+=m-(z-.5*u-(d.height-v))}var S=g([t.style.reset(),r.TEXT.cls(),"frac-line"]);S.height=u;var M=-(z-.5*u);x=l.makeVList([{type:"elem",elem:w,shift:v},{type:"elem",elem:S,shift:M},{type:"elem",elem:o,shift:-k}],"individualShift",null,t)}x.height*=h.sizeMultiplier/t.style.sizeMultiplier;x.depth*=h.sizeMultiplier/t.style.sizeMultiplier;var q;if(h.size===r.DISPLAY.size){q=c.metrics.delim1}else{q=c.metrics.getDelim2(h)}var A,T;if(e.value.leftDelim==null){A=f(t)}else{A=s.customSizedDelim(e.value.leftDelim,q,true,t.withStyle(h),e.mode)}if(e.value.rightDelim==null){T=f(t)}else{T=s.customSizedDelim(e.value.rightDelim,q,true,t.withStyle(h),e.mode)}return g(["mord",t.style.reset(),h.cls()],[A,g(["mfrac"],[x]),T],t.getColor())},array:function(e,t,i){var h,a;var r=e.value.body.length;var s=0;var p=new Array(r);var o=1/c.metrics.ptPerEm;var d=5*o;var w=12*o;var u=n.deflt(e.value.arraystretch,1);var k=u*w;var m=.7*k;var f=.3*k;var v=0;for(h=0;h<e.value.body.length;++h){var x=e.value.body[h];var b=m;var z=f;if(s<x.length){s=x.length}var S=new Array(x.length);for(a=0;a<x.length;++a){var M=y(x[a],t);if(z<M.depth){z=M.depth}if(b<M.height){b=M.height}S[a]=M}var q=0;if(e.value.rowGaps[h]){q=e.value.rowGaps[h].value;switch(q.unit){case"em":q=q.number;break;case"ex":q=q.number*c.metrics.emPerEx;break;default:console.error("Can't handle unit "+q.unit);q=0}if(q>0){q+=f;if(z<q){z=q}q=0}}S.height=b;S.depth=z;v+=b;S.pos=v;v+=z+q;p[h]=S}var A=v/2+c.metrics.axisHeight;var T=e.value.cols||[];var N=[];var C;for(a=0;a<s;++a){var R=T[a]||{};var E;if(a>0||e.value.hskipBeforeAndAfter){E=n.deflt(R.pregap,d);if(E!==0){C=g(["arraycolsep"],[]);C.style.width=E+"em";N.push(C)}}var P=[];for(h=0;h<r;++h){var D=p[h];var L=D[a];if(!L){continue}var 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o=false;if(t.style.size===r.DISPLAY.size&&e.value.symbol&&!n.contains(p,e.value.body)){o=true}var d;var w=0;var u=0;if(e.value.symbol){var k=o?"Size2-Regular":"Size1-Regular";d=l.makeSymbol(e.value.body,k,"math",t.getColor(),["op-symbol",o?"large-op":"small-op","mop"]);w=(d.height-d.depth)/2-c.metrics.axisHeight*t.style.sizeMultiplier;u=d.italic}else{var m=[];for(var f=1;f<e.value.body.length;f++){m.push(l.mathsym(e.value.body[f],e.mode))}d=g(["mop"],m,t.getColor())}if(s){d=g([],[d]);var v,x,b,z;if(h){var S=y(h,t.withStyle(t.style.sup()));v=g([t.style.reset(),t.style.sup().cls()],[S]);x=Math.max(c.metrics.bigOpSpacing1,c.metrics.bigOpSpacing3-S.depth)}if(a){var M=y(a,t.withStyle(t.style.sub()));b=g([t.style.reset(),t.style.sub().cls()],[M]);z=Math.max(c.metrics.bigOpSpacing2,c.metrics.bigOpSpacing4-M.height)}var 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d=(h.height+h.depth)*t.style.sizeMultiplier;var w=d+o+a;var u=g(["sqrt-sign"],[s.customSizedDelim("\\surd",w,false,t,e.mode)],t.getColor());var k=u.height+u.depth-a;if(k>h.height+h.depth+o){o=(o+k-h.height-h.depth)/2}var m=-(h.height+o+a)+u.height;u.style.top=m+"em";u.height-=m;u.depth+=m;var f;if(h.height===0&&h.depth===0){f=g()}else{f=l.makeVList([{type:"elem",elem:h},{type:"kern",size:o},{type:"elem",elem:p},{type:"kern",size:a}],"firstBaseline",null,t)}if(!e.value.index){return g(["sqrt","mord"],[u,f])}else{var v=y(e.value.index,t.withStyle(r.SCRIPTSCRIPT));var x=g([t.style.reset(),r.SCRIPTSCRIPT.cls()],[v]);var b=Math.max(u.height,f.height);var z=Math.max(u.depth,f.depth);var S=.6*(b-z);var M=l.makeVList([{type:"elem",elem:x}],"shift",-S,t);var q=g(["root"],[M]);return g(["sqrt","mord"],[q,u,f])}},sizing:function(e,t,i){var h=o(e.value.value,t.withSize(e.value.size),i);var a=g(["mord"],[g(["sizing","reset-"+t.size,e.value.size,t.style.cls()],h)]);var 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g(["minner",t.style.cls()],h,t.getColor())},rule:function(e,t,i){var h=g(["mord","rule"],[],t.getColor());var a=0;if(e.value.shift){a=e.value.shift.number;if(e.value.shift.unit==="ex"){a*=c.metrics.xHeight}}var r=e.value.width.number;if(e.value.width.unit==="ex"){r*=c.metrics.xHeight}var l=e.value.height.number;if(e.value.height.unit==="ex"){l*=c.metrics.xHeight}a/=t.style.sizeMultiplier;r/=t.style.sizeMultiplier;l/=t.style.sizeMultiplier;h.style.borderRightWidth=r+"em";h.style.borderTopWidth=l+"em";h.style.bottom=a+"em";
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r;if(t.style!==t.parentStyle){r=t.style.sizeMultiplier/t.parentStyle.sizeMultiplier;h.height*=r;h.depth*=r}if(t.size!==t.parentSize){r=l.sizingMultiplier[t.size]/l.sizingMultiplier[t.parentSize];h.height*=r;h.depth*=r}return h}else{throw new a("Got group of unknown type: '"+e.type+"'")}};var x=function(e,t){e=JSON.parse(JSON.stringify(e));var i=r.TEXT;if(t.displayMode){i=r.DISPLAY}var a=new h({style:i,size:"size5"});var l=o(e,a);var s=g(["base",a.style.cls()],l);var p=g(["strut"]);var c=g(["strut","bottom"]);p.style.height=s.height+"em";c.style.height=s.height+s.depth+"em";c.style.verticalAlign=-s.depth+"em";var n=g(["katex-html"],[p,c,s]);n.setAttribute("aria-hidden","true");return n};t.exports=x},{"./Options":4,"./ParseError":5,"./Style":8,"./buildCommon":9,"./delimiter":13,"./domTree":14,"./fontMetrics":16,"./utils":22}],11:[function(e,t,i){var h=e("./buildCommon");var a=e("./fontMetrics");var r=e("./mathMLTree");var l=e("./Options");var s=e("./ParseError");var p=e("../src/Settings");var c=e("./Style");var n=e("./symbols");var g=e("./utils");var o=h.makeSpan;var d=h.fontMap;var w=function(e,t){if(n[t][e]&&n[t][e].replace){e=n[t][e].replace}return new r.TextNode(e)};var u=function(e,t){var i=t.font;if(!i){return null}var h=e.mode;if(i==="mathit"){return"italic"}var r=e.value;if(g.contains(["\\imath","\\jmath"],r)){return null}if(n[h][r]&&n[h][r].replace){r=n[h][r].replace}var l=d[i].fontName;if(a.getCharacterMetrics(r,l)){return d[t.font].variant}return null};var k={mathord:function(e,t){var i=new r.MathNode("mi",[w(e.value,e.mode)]);var h=u(e,t);if(h){i.setAttribute("mathvariant",h)}return i},textord:function(e,t){var i=w(e.value,e.mode);var h=u(e,t)||"normal";var a;if(/[0-9]/.test(e.value)){a=new r.MathNode("mn",[i]);if(t.font){a.setAttribute("mathvariant",h)}}else{a=new r.MathNode("mi",[i]);a.setAttribute("mathvariant",h)}return a},bin:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);return t},rel:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);return t},open:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);return t},close:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);return t},inner:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);return t},punct:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);t.setAttribute("separator","true");return t},ordgroup:function(e,t){var i=m(e.value,t);var h=new r.MathNode("mrow",i);return h},text:function(e,t){var i=m(e.value.body,t);var h=new r.MathNode("mtext",i);return h},color:function(e,t){var i=m(e.value.value,t);var h=new r.MathNode("mstyle",i);h.setAttribute("mathcolor",e.value.color);return h},supsub:function(e,t){var i=[f(e.value.base,t)];if(e.value.sub){i.push(f(e.value.sub,t))}if(e.value.sup){i.push(f(e.value.sup,t))}var h;if(!e.value.sub){h="msup"}else if(!e.value.sup){h="msub"}else{h="msubsup"}var a=new r.MathNode(h,i);return a},genfrac:function(e,t){var i=new r.MathNode("mfrac",[f(e.value.numer,t),f(e.value.denom,t)]);if(!e.value.hasBarLine){i.setAttribute("linethickness","0px")}if(e.value.leftDelim!=null||e.value.rightDelim!=null){var h=[];if(e.value.leftDelim!=null){var a=new r.MathNode("mo",[new r.TextNode(e.value.leftDelim)]);a.setAttribute("fence","true");h.push(a)}h.push(i);if(e.value.rightDelim!=null){var l=new r.MathNode("mo",[new r.TextNode(e.value.rightDelim)]);l.setAttribute("fence","true");h.push(l)}var s=new r.MathNode("mrow",h);return s}return i},array:function(e,t){return new r.MathNode("mtable",e.value.body.map(function(e){return new r.MathNode("mtr",e.map(function(e){return new r.MathNode("mtd",[f(e,t)])}))}))},sqrt:function(e,t){var i;if(e.value.index){i=new r.MathNode("mroot",[f(e.value.body,t),f(e.value.index,t)])}else{i=new r.MathNode("msqrt",[f(e.value.body,t)])}return i},leftright:function(e,t){var i=m(e.value.body,t);if(e.value.left!=="."){var h=new r.MathNode("mo",[w(e.value.left,e.mode)]);h.setAttribute("fence","true");i.unshift(h)}if(e.value.right!=="."){var a=new r.MathNode("mo",[w(e.value.right,e.mode)]);a.setAttribute("fence","true");i.push(a)}var l=new r.MathNode("mrow",i);return l},accent:function(e,t){var i=new r.MathNode("mo",[w(e.value.accent,e.mode)]);var h=new r.MathNode("mover",[f(e.value.base,t),i]);h.setAttribute("accent","true");return h},spacing:function(e){var t;if(e.value==="\\ "||e.value==="\\space"||e.value===" "||e.value==="~"){t=new r.MathNode("mtext",[new r.TextNode("\xa0")])}else{t=new r.MathNode("mspace");t.setAttribute("width",h.spacingFunctions[e.value].size)}return t},op:function(e){var t;if(e.value.symbol){t=new r.MathNode("mo",[w(e.value.body,e.mode)])}else{t=new r.MathNode("mi",[new r.TextNode(e.value.body.slice(1))])}return t},katex:function(e){var t=new r.MathNode("mtext",[new r.TextNode("KaTeX")]);return t},font:function(e,t){var i=e.value.font;var h=f(e.value.body,t.withFont(i));return h},delimsizing:function(e){var t=[];if(e.value.value!=="."){t.push(w(e.value.value,e.mode))}var i=new r.MathNode("mo",t);if(e.value.delimType==="open"||e.value.delimType==="close"){i.setAttribute("fence","true")}else{i.setAttribute("fence","false")}return i},styling:function(e,t){var i=m(e.value.value,t);var h=new r.MathNode("mstyle",i);var a={display:["0","true"],text:["0","false"],script:["1","false"],scriptscript:["2","false"]};var l=a[e.value.style];h.setAttribute("scriptlevel",l[0]);h.setAttribute("displaystyle",l[1]);return h},sizing:function(e,t){var i=m(e.value.value,t);var a=new r.MathNode("mstyle",i);a.setAttribute("mathsize",h.sizingMultiplier[e.value.size]+"em");return a},overline:function(e,t){var i=new r.MathNode("mo",[new r.TextNode("\u203e")]);i.setAttribute("stretchy","true");var h=new r.MathNode("mover",[f(e.value.body,t),i]);h.setAttribute("accent","true");return h},rule:function(e){var t=new r.MathNode("mrow");return t},llap:function(e,t){var i=new 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V={xHeight:p,quad:c,num1:g,num2:o,num3:d,denom1:w,denom2:u,sup1:k,sup2:m,sup3:f,sub1:v,sub2:y,supDrop:x,subDrop:b,axisHeight:A,defaultRuleThickness:L,bigOpSpacing1:O,bigOpSpacing2:I,bigOpSpacing3:B,bigOpSpacing4:F,bigOpSpacing5:_,ptPerEm:G,emPerEx:p/c,delim1:z,getDelim2:function(e){if(e.size===h.TEXT.size){return S}else if(e.size===h.SCRIPT.size){return M}else if(e.size===h.SCRIPTSCRIPT.size){return q}throw new Error("Unexpected style size: "+e.size)}};var 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c={"&":"&amp;",">":"&gt;","<":"&lt;",'"':"&quot;","'":"&#x27;"};var n=/[&><"']/g;function g(e){return c[e]}function o(e){return(""+e).replace(n,g)}var d;if(typeof document!=="undefined"){var w=document.createElement("span");if("textContent"in w){d=function(e,t){e.textContent=t}}else{d=function(e,t){e.innerText=t}}}function u(e){d(e,"")}t.exports={contains:r,deflt:l,escape:o,hyphenate:p,indexOf:a,setTextContent:d,clearNode:u}},{}]},{},[1])(1)});
diff --git a/client/katex/katex.tar.gz b/client/katex/katex.tar.gz
new file mode 100644
index 0000000..33bd35e
--- /dev/null
+++ b/client/katex/katex.tar.gz
diff --git a/client/katex/katex.zip b/client/katex/katex.zip
new file mode 100644
index 0000000..7339b35
--- /dev/null
+++ b/client/katex/katex.zip
diff --git a/client/katex/katex/README.md b/client/katex/katex/README.md
new file mode 100644
index 0000000..3fd2431
--- /dev/null
+++ b/client/katex/katex/README.md
@@ -0,0 +1,64 @@
+# [<img src="https://khan.github.io/KaTeX/katex-logo.svg" width="130" alt="KaTeX">](https://khan.github.io/KaTeX/) [![Build Status](https://travis-ci.org/Khan/KaTeX.svg?branch=master)](https://travis-ci.org/Khan/KaTeX)
+
+KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web.
+
+ * **Fast:** KaTeX renders its math synchronously and doesn't need to reflow the page. See how it compares to a competitor in [this speed test](http://jsperf.com/katex-vs-mathjax/).
+ * **Print quality:** KaTeX’s layout is based on Donald Knuth’s TeX, the gold standard for math typesetting.
+ * **Self contained:** KaTeX has no dependencies and can easily be bundled with your website resources.
+ * **Server side rendering:** KaTeX produces the same output regardless of browser or environment, so you can pre-render expressions using Node.js and send them as plain HTML.
+
+KaTeX supports all major browsers, including Chrome, Safari, Firefox, Opera, and IE 8 - IE 11.  A list of supported  commands can be on the [wiki](https://github.com/Khan/KaTeX/wiki/Function-Support-in-KaTeX).
+
+## Usage
+
+You can [download KaTeX](https://github.com/khan/katex/releases) and host it on your server or include the `katex.min.js` and `katex.min.css` files on your page directly from a CDN:
+
+```html
+<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/KaTeX/0.3.0/katex.min.css">
+<script src="//cdnjs.cloudflare.com/ajax/libs/KaTeX/0.3.0/katex.min.js"></script>
+```
+
+#### In-browser rendering
+
+Call `katex.render` with a TeX expression and a DOM element to render into:
+
+```js
+katex.render("c = \\pm\\sqrt{a^2 + b^2}", element);
+```
+
+If KaTeX can't parse the expression, it throws a `katex.ParseError` error.
+
+#### Server side rendering or rendering to a string
+
+To generate HTML on the server or to generate an HTML string of the rendered math, you can use `katex.renderToString`:
+
+```js
+var html = katex.renderToString("c = \\pm\\sqrt{a^2 + b^2}");
+// '<span class="katex">...</span>'
+```
+
+Make sure to include the CSS and font files, but there is no need to include the JavaScript. Like `render`, `renderToString` throws if it can't parse the expression.
+
+#### Rendering options
+
+You can provide an object of options as the last argument to `katex.render` and `katex.renderToString`. Available options are:
+
+- `displayMode`: `boolean`. If `true` the math will be rendered in display mode, which will put the math in display style (so `\int` and `\sum` are large, for example), and will center the math on the page on its own line. If `false` the math will be rendered in inline mode. (default: `false`)
+
+For example:
+
+```js
+katex.render("c = \\pm\\sqrt{a^2 + b^2}", element, { displayMode: true });
+```
+
+#### Automatic rendering of math on a page
+
+Math on the page can be automatically rendered using the auto-render extension. See [the Auto-render README](contrib/auto-render/README.md) for more information.
+
+## Contributing
+
+See [CONTRIBUTING.md](CONTRIBUTING.md)
+
+## License
+
+KaTeX is licensed under the [MIT License](http://opensource.org/licenses/MIT).
diff --git a/client/katex/katex/contrib/auto-render.min.js b/client/katex/katex/contrib/auto-render.min.js
new file mode 100644
index 0000000..5eab253
--- /dev/null
+++ b/client/katex/katex/contrib/auto-render.min.js
@@ -0,0 +1 @@
+(function(e){if("function"==typeof bootstrap)bootstrap("rendermathinelement",e);else if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeRenderMathInElement=e}else"undefined"!=typeof window?window.renderMathInElement=e():global.renderMathInElement=e()})(function(){var e,t,r,n,a;return function i(e,t,r){function n(o,l){if(!t[o]){if(!e[o]){var f=typeof require=="function"&&require;if(!l&&f)return f(o,!0);if(a)return a(o,!0);throw new Error("Cannot find module '"+o+"'")}var s=t[o]={exports:{}};e[o][0].call(s.exports,function(t){var r=e[o][1][t];return n(r?r:t)},s,s.exports,i,e,t,r)}return t[o].exports}var a=typeof require=="function"&&require;for(var o=0;o<r.length;o++)n(r[o]);return n}({1:[function(e,t,r){var n=e("./splitAtDelimiters");var a=function(e,t){var r=[{type:"text",data:e}];for(var a=0;a<t.length;a++){var i=t[a];r=n(r,i.left,i.right,i.display||false)}return r};var i=function(e,t){var r=a(e,t);var n=document.createDocumentFragment();for(var i=0;i<r.length;i++){if(r[i].type==="text"){n.appendChild(document.createTextNode(r[i].data))}else{var o=document.createElement("span");var l=r[i].data;try{katex.render(l,o,{displayMode:r[i].display})}catch(f){if(!(f instanceof katex.ParseError)){throw f}console.error("KaTeX auto-render: Failed to parse `"+r[i].data+"` with ",f);n.appendChild(document.createTextNode(r[i].rawData));continue}n.appendChild(o)}}return n};var o=function(e,t,r){for(var n=0;n<e.childNodes.length;n++){var a=e.childNodes[n];if(a.nodeType===3){var l=i(a.textContent,t);n+=l.childNodes.length-1;e.replaceChild(l,a)}else if(a.nodeType===1){var f=r.indexOf(a.nodeName.toLowerCase())===-1;if(f){o(a,t,r)}}}};var l={delimiters:[{left:"$$",right:"$$",display:true},{left:"\\[",right:"\\]",display:true},{left:"\\(",right:"\\)",display:false}],ignoredTags:["script","noscript","style","textarea","pre","code"]};var f=function(e){var t,r;for(var n=1,a=arguments.length;n<a;n++){t=arguments[n];for(r in t){if(Object.prototype.hasOwnProperty.call(t,r)){e[r]=t[r]}}}return e};var s=function(e,t){if(!e){throw new Error("No element provided to render")}t=f({},l,t);o(e,t.delimiters,t.ignoredTags)};t.exports=s},{"./splitAtDelimiters":2}],2:[function(e,t,r){var n=function(e,t,r){var n=r;var a=0;var i=e.length;while(n<t.length){var o=t[n];if(a<=0&&t.slice(n,n+i)===e){return n}else if(o==="\\"){n++}else if(o==="{"){a++}else if(o==="}"){a--}n++}return-1};var a=function(e,t,r,a){var i=[];for(var o=0;o<e.length;o++){if(e[o].type==="text"){var l=e[o].data;var f=true;var s=0;var d;d=l.indexOf(t);if(d!==-1){s=d;i.push({type:"text",data:l.slice(0,s)});f=false}while(true){if(f){d=l.indexOf(t,s);if(d===-1){break}i.push({type:"text",data:l.slice(s,d)});s=d}else{d=n(r,l,s+t.length);if(d===-1){break}i.push({type:"math",data:l.slice(s+t.length,d),rawData:l.slice(s,d+r.length),display:a});s=d+r.length}f=!f}i.push({type:"text",data:l.slice(s)})}else{i.push(e[o])}}return i};t.exports=a},{}]},{},[1])(1)});
diff --git a/client/katex/katex/fonts/KaTeX_AMS-Regular.eot b/client/katex/katex/fonts/KaTeX_AMS-Regular.eot
new file mode 100644
index 0000000..842e453
--- /dev/null
+++ b/client/katex/katex/fonts/KaTeX_AMS-Regular.eot
diff --git a/client/katex/katex/fonts/KaTeX_AMS-Regular.ttf b/client/katex/katex/fonts/KaTeX_AMS-Regular.ttf
new file mode 100644
index 0000000..8da3d44
--- /dev/null
+++ b/client/katex/katex/fonts/KaTeX_AMS-Regular.ttf
diff --git a/client/katex/katex/fonts/KaTeX_AMS-Regular.woff b/client/katex/katex/fonts/KaTeX_AMS-Regular.woff
new file mode 100644
index 0000000..f8934ec
--- /dev/null
+++ b/client/katex/katex/fonts/KaTeX_AMS-Regular.woff
diff --git a/client/katex/katex/fonts/KaTeX_AMS-Regular.woff2 b/client/katex/katex/fonts/KaTeX_AMS-Regular.woff2
new file mode 100644
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s};n.prototype.parseSpecialGroup=function(e,t,i,h){if(t==="original"){t=i}if(t==="color"||t==="size"){var a=this.lexer.lex(e,i);if(h&&a.text!=="["){return null}this.expect(a,h?"[":"{");var r=this.lexer.lex(a.position,t);var l;if(t==="color"){l=r.text}else{l=r.data}var s=this.lexer.lex(r.position,i);this.expect(s,h?"]":"}");return new d(new o(new g(t,l,i),s.position),false)}else if(t==="text"){var p=this.lexer.lex(e,"whitespace");e=p.position}if(h){return this.parseOptionalGroup(e,t)}else{return this.parseGroup(e,t)}};n.prototype.parseGroup=function(e,t){var i=this.lexer.lex(e,t);if(i.text==="{"){var h=this.parseExpression(i.position,t,false);var a=this.lexer.lex(h.position,t);this.expect(a,"}");return new d(new o(new g("ordgroup",h.result,t),a.position),false)}else{return this.parseSymbol(e,t)}};n.prototype.parseOptionalGroup=function(e,t){var i=this.lexer.lex(e,t);if(i.text==="["){var h=this.parseExpression(i.position,t,false,"]");var a=this.lexer.lex(h.position,t);this.expect(a,"]");return new d(new o(new g("ordgroup",h.result,t),a.position),false)}else{return null}};n.prototype.parseSymbol=function(e,t){var i=this.lexer.lex(e,t);if(h.funcs[i.text]){return new d(new o(i.text,i.position),true)}else if(l[t][i.text]){return new d(new o(new g(l[t][i.text].group,i.text,t),i.position),false)}else{return null}};n.prototype.ParseNode=g;t.exports=n},{"./Lexer":3,"./ParseError":5,"./environments":15,"./functions":17,"./parseData":19,"./symbols":21,"./utils":22}],7:[function(e,t,i){function h(e,t){return e===undefined?t:e}function a(e){e=e||{};this.displayMode=h(e.displayMode,false)}t.exports=a},{}],8:[function(e,t,i){function h(e,t,i,h){this.id=e;this.size=t;this.cramped=h;this.sizeMultiplier=i}h.prototype.sup=function(){return w[u[this.id]]};h.prototype.sub=function(){return w[k[this.id]]};h.prototype.fracNum=function(){return w[m[this.id]]};h.prototype.fracDen=function(){return w[f[this.id]]};h.prototype.cramp=function(){return w[v[this.id]]};h.prototype.cls=function(){return o[this.size]+(this.cramped?" cramped":" uncramped")};h.prototype.reset=function(){return d[this.size]};var a=0;var r=1;var l=2;var s=3;var p=4;var c=5;var n=6;var g=7;var o=["displaystyle textstyle","textstyle","scriptstyle","scriptscriptstyle"];var d=["reset-textstyle","reset-textstyle","reset-scriptstyle","reset-scriptscriptstyle"];var w=[new h(a,0,1,false),new h(r,0,1,true),new h(l,1,1,false),new h(s,1,1,true),new h(p,2,.7,false),new h(c,2,.7,true),new h(n,3,.5,false),new h(g,3,.5,true)];var u=[p,c,p,c,n,g,n,g];var k=[c,c,c,c,g,g,g,g];var m=[l,s,p,c,n,g,n,g];var f=[s,s,c,c,g,g,g,g];var v=[r,r,s,s,c,c,g,g];t.exports={DISPLAY:w[a],TEXT:w[l],SCRIPT:w[p],SCRIPTSCRIPT:w[n]}},{}],9:[function(e,t,i){var h=e("./domTree");var a=e("./fontMetrics");var r=e("./symbols");var l=e("./utils");var s=function(e,t,i,l,s){if(r[i][e]&&r[i][e].replace){e=r[i][e].replace}var p=a.getCharacterMetrics(e,t);var c;if(p){c=new h.symbolNode(e,p.height,p.depth,p.italic,p.skew,s)}else{typeof console!=="undefined"&&console.warn("No character metrics for '"+e+"' in style '"+t+"'");c=new h.symbolNode(e,0,0,0,0,s)}if(l){c.style.color=l}return c};var p=function(e,t,i,h){if(r[t][e].font==="main"){return s(e,"Main-Regular",t,i,h)}else{return s(e,"AMS-Regular",t,i,h.concat(["amsrm"]))}};var c=function(e,t,i,h,a){if(a==="mathord"){return n(e,t,i,h)}else if(a==="textord"){return s(e,"Main-Regular",t,i,h.concat(["mathrm"]))}else{throw new Error("unexpected type: "+a+" in mathDefault")}};var n=function(e,t,i,h){if(/[0-9]/.test(e.charAt(0))||l.contains(["\u0131","\u0237"],e)||l.contains(v,e)){return s(e,"Main-Italic",t,i,h.concat(["mainit"]))}else{return s(e,"Math-Italic",t,i,h.concat(["mathit"]))}};var g=function(e,t,i){var h=e.mode;var p=e.value;if(r[h][p]&&r[h][p].replace){p=r[h][p].replace}var g=["mord"];var o=t.getColor();var d=t.font;if(d){if(d==="mathit"||l.contains(["\u0131","\u0237"],p)){return n(p,h,o,g.concat(["mathit"]))}else{var w=y[d].fontName;if(a.getCharacterMetrics(p,w)){return s(p,w,h,o,g.concat([d]))}else{return c(p,h,o,g,i)}}}else{return c(p,h,o,g,i)}};var o=function(e){var t=0;var i=0;var h=0;if(e.children){for(var a=0;a<e.children.length;a++){if(e.children[a].height>t){t=e.children[a].height}if(e.children[a].depth>i){i=e.children[a].depth}if(e.children[a].maxFontSize>h){h=e.children[a].maxFontSize}}}e.height=t;e.depth=i;e.maxFontSize=h};var d=function(e,t,i){var a=new h.span(e,t);o(a);if(i){a.style.color=i}return a};var w=function(e){var t=new h.documentFragment(e);o(t);return t};var u=function(e,t){var i=d([],[new h.symbolNode("\u200b")]);i.style.fontSize=t/e.style.sizeMultiplier+"em";var a=d(["fontsize-ensurer","reset-"+e.size,"size5"],[i]);return a};var k=function(e,t,i,a){var r;var l;var s;if(t==="individualShift"){var p=e;e=[p[0]];r=-p[0].shift-p[0].elem.depth;l=r;for(s=1;s<p.length;s++){var c=-p[s].shift-l-p[s].elem.depth;var n=c-(p[s-1].elem.height+p[s-1].elem.depth);l=l+c;e.push({type:"kern",size:n});e.push(p[s])}}else if(t==="top"){var g=i;for(s=0;s<e.length;s++){if(e[s].type==="kern"){g-=e[s].size}else{g-=e[s].elem.height+e[s].elem.depth}}r=g}else if(t==="bottom"){r=-i}else if(t==="shift"){r=-e[0].elem.depth-i}else if(t==="firstBaseline"){r=-e[0].elem.depth}else{r=0}var o=0;for(s=0;s<e.length;s++){if(e[s].type==="elem"){o=Math.max(o,e[s].elem.maxFontSize)}}var w=u(a,o);var k=[];l=r;for(s=0;s<e.length;s++){if(e[s].type==="kern"){l+=e[s].size}else{var m=e[s].elem;var f=-m.depth-l;l+=m.height+m.depth;var v=d([],[w,m]);v.height-=f;v.depth+=f;v.style.top=f+"em";k.push(v)}}var y=d(["baseline-fix"],[w,new h.symbolNode("\u200b")]);k.push(y);var x=d(["vlist"],k);x.height=Math.max(l,x.height);x.depth=Math.max(-r,x.depth);return x};var m={size1:.5,size2:.7,size3:.8,size4:.9,size5:1,size6:1.2,size7:1.44,size8:1.73,size9:2.07,size10:2.49};var f={"\\qquad":{size:"2em",className:"qquad"},"\\quad":{size:"1em",className:"quad"},"\\enspace":{size:"0.5em",className:"enspace"},"\\;":{size:"0.277778em",className:"thickspace"},"\\:":{size:"0.22222em",className:"mediumspace"},"\\,":{size:"0.16667em",className:"thinspace"},"\\!":{size:"-0.16667em",className:"negativethinspace"}};var v=["\\Gamma","\\Delta","\\Theta","\\Lambda","\\Xi","\\Pi","\\Sigma","\\Upsilon","\\Phi","\\Psi","\\Omega"];var y={mathbf:{variant:"bold",fontName:"Main-Bold"},mathrm:{variant:"normal",fontName:"Main-Regular"},mathbb:{variant:"double-struck",fontName:"AMS-Regular"},mathcal:{variant:"script",fontName:"Caligraphic-Regular"},mathfrak:{variant:"fraktur",fontName:"Fraktur-Regular"},mathscr:{variant:"script",fontName:"Script-Regular"},mathsf:{variant:"sans-serif",fontName:"SansSerif-Regular"},mathtt:{variant:"monospace",fontName:"Typewriter-Regular"}};t.exports={makeSymbol:s,fontMap:y,mathsym:p,makeSpan:d,makeFragment:w,makeVList:k,makeOrd:g,sizingMultiplier:m,spacingFunctions:f}},{"./domTree":14,"./fontMetrics":16,"./symbols":21,"./utils":22}],10:[function(e,t,i){var h=e("./Options");var a=e("./ParseError");var r=e("./Style");var l=e("./buildCommon");var s=e("./delimiter");var p=e("./domTree");var c=e("./fontMetrics");var n=e("./utils");var g=l.makeSpan;var o=function(e,t,i){var h=[];for(var a=0;a<e.length;a++){var r=e[a];h.push(y(r,t,i));i=r}return h};var d={mathord:"mord",textord:"mord",bin:"mbin",rel:"mrel",text:"mord",open:"mopen",close:"mclose",inner:"minner",genfrac:"mord",array:"minner",spacing:"mord",punct:"mpunct",ordgroup:"mord",op:"mop",katex:"mord",overline:"mord",rule:"mord",leftright:"minner",sqrt:"mord",accent:"mord"};var w=function(e){if(e==null){return d.mathord}else if(e.type==="supsub"){return w(e.value.base)}else if(e.type==="llap"||e.type==="rlap"){return w(e.value)}else if(e.type==="color"){return w(e.value.value)}else if(e.type==="sizing"){return w(e.value.value)}else if(e.type==="styling"){return w(e.value.value)}else if(e.type==="delimsizing"){return d[e.value.delimType]}else{return d[e.type]}};var u=function(e,t){if(!e){return false}else if(e.type==="op"){return e.value.limits&&t.style.size===r.DISPLAY.size}else if(e.type==="accent"){return m(e.value.base)}else{return null}};var k=function(e){if(!e){return false}else if(e.type==="ordgroup"){if(e.value.length===1){return k(e.value[0])}else{return e}}else if(e.type==="color"){if(e.value.value.length===1){return k(e.value.value[0])}else{return e}}else{return e}};var m=function(e){var t=k(e);return t.type==="mathord"||t.type==="textord"||t.type==="bin"||t.type==="rel"||t.type==="inner"||t.type==="open"||t.type==="close"||t.type==="punct"};var f=function(e){return g(["sizing","reset-"+e.size,"size5",e.style.reset(),r.TEXT.cls(),"nulldelimiter"])};var v={mathord:function(e,t,i){return l.makeOrd(e,t,"mathord")},textord:function(e,t,i){return l.makeOrd(e,t,"textord")},bin:function(e,t,i){var h="mbin";var a=i;while(a&&a.type==="color"){var r=a.value.value;a=r[r.length-1]}if(!i||n.contains(["mbin","mopen","mrel","mop","mpunct"],w(a))){e.type="textord";h="mord"}return l.mathsym(e.value,e.mode,t.getColor(),[h])},rel:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["mrel"])},open:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["mopen"])},close:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["mclose"])},inner:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["minner"])},punct:function(e,t,i){return l.mathsym(e.value,e.mode,t.getColor(),["mpunct"])},ordgroup:function(e,t,i){return g(["mord",t.style.cls()],o(e.value,t.reset()))},text:function(e,t,i){return g(["text","mord",t.style.cls()],o(e.value.body,t.reset()))},color:function(e,t,i){var h=o(e.value.value,t.withColor(e.value.color),i);return new l.makeFragment(h)},supsub:function(e,t,i){if(u(e.value.base,t)){return v[e.value.base.type](e,t,i)}var h=y(e.value.base,t.reset());var a,s,n,o;if(e.value.sup){n=y(e.value.sup,t.withStyle(t.style.sup()));a=g([t.style.reset(),t.style.sup().cls()],[n])}if(e.value.sub){o=y(e.value.sub,t.withStyle(t.style.sub()));s=g([t.style.reset(),t.style.sub().cls()],[o])}var d,k;if(m(e.value.base)){d=0;k=0}else{d=h.height-c.metrics.supDrop;k=h.depth+c.metrics.subDrop}var f;if(t.style===r.DISPLAY){f=c.metrics.sup1}else if(t.style.cramped){f=c.metrics.sup3}else{f=c.metrics.sup2}var x=r.TEXT.sizeMultiplier*t.style.sizeMultiplier;var b=.5/c.metrics.ptPerEm/x+"em";var z;if(!e.value.sup){k=Math.max(k,c.metrics.sub1,o.height-.8*c.metrics.xHeight);z=l.makeVList([{type:"elem",elem:s}],"shift",k,t);z.children[0].style.marginRight=b;if(h instanceof p.symbolNode){z.children[0].style.marginLeft=-h.italic+"em"}}else if(!e.value.sub){d=Math.max(d,f,n.depth+.25*c.metrics.xHeight);z=l.makeVList([{type:"elem",elem:a}],"shift",-d,t);z.children[0].style.marginRight=b}else{d=Math.max(d,f,n.depth+.25*c.metrics.xHeight);k=Math.max(k,c.metrics.sub2);var S=c.metrics.defaultRuleThickness;if(d-n.depth-(o.height-k)<4*S){k=4*S-(d-n.depth)+o.height;var M=.8*c.metrics.xHeight-(d-n.depth);if(M>0){d+=M;k-=M}}z=l.makeVList([{type:"elem",elem:s,shift:k},{type:"elem",elem:a,shift:-d}],"individualShift",null,t);if(h instanceof p.symbolNode){z.children[0].style.marginLeft=-h.italic+"em"}z.children[0].style.marginRight=b;z.children[1].style.marginRight=b}return g([w(e.value.base)],[h,z])},genfrac:function(e,t,i){var h=t.style;if(e.value.size==="display"){h=r.DISPLAY}else if(e.value.size==="text"){h=r.TEXT}var a=h.fracNum();var p=h.fracDen();var n=y(e.value.numer,t.withStyle(a));var o=g([h.reset(),a.cls()],[n]);var d=y(e.value.denom,t.withStyle(p));var w=g([h.reset(),p.cls()],[d]);var u;if(e.value.hasBarLine){u=c.metrics.defaultRuleThickness/t.style.sizeMultiplier}else{u=0}var k;var m;var v;if(h.size===r.DISPLAY.size){k=c.metrics.num1;if(u>0){m=3*u}else{m=7*c.metrics.defaultRuleThickness}v=c.metrics.denom1}else{if(u>0){k=c.metrics.num2;m=u}else{k=c.metrics.num3;m=3*c.metrics.defaultRuleThickness}v=c.metrics.denom2}var x;if(u===0){var b=k-n.depth-(d.height-v);if(b<m){k+=.5*(m-b);v+=.5*(m-b)}x=l.makeVList([{type:"elem",elem:w,shift:v},{type:"elem",elem:o,shift:-k}],"individualShift",null,t)}else{var z=c.metrics.axisHeight;if(k-n.depth-(z+.5*u)<m){k+=m-(k-n.depth-(z+.5*u))}if(z-.5*u-(d.height-v)<m){v+=m-(z-.5*u-(d.height-v))}var S=g([t.style.reset(),r.TEXT.cls(),"frac-line"]);S.height=u;var M=-(z-.5*u);x=l.makeVList([{type:"elem",elem:w,shift:v},{type:"elem",elem:S,shift:M},{type:"elem",elem:o,shift:-k}],"individualShift",null,t)}x.height*=h.sizeMultiplier/t.style.sizeMultiplier;x.depth*=h.sizeMultiplier/t.style.sizeMultiplier;var q;if(h.size===r.DISPLAY.size){q=c.metrics.delim1}else{q=c.metrics.getDelim2(h)}var A,T;if(e.value.leftDelim==null){A=f(t)}else{A=s.customSizedDelim(e.value.leftDelim,q,true,t.withStyle(h),e.mode)}if(e.value.rightDelim==null){T=f(t)}else{T=s.customSizedDelim(e.value.rightDelim,q,true,t.withStyle(h),e.mode)}return g(["mord",t.style.reset(),h.cls()],[A,g(["mfrac"],[x]),T],t.getColor())},array:function(e,t,i){var h,a;var r=e.value.body.length;var s=0;var p=new Array(r);var o=1/c.metrics.ptPerEm;var d=5*o;var w=12*o;var u=n.deflt(e.value.arraystretch,1);var k=u*w;var m=.7*k;var f=.3*k;var v=0;for(h=0;h<e.value.body.length;++h){var x=e.value.body[h];var b=m;var z=f;if(s<x.length){s=x.length}var S=new Array(x.length);for(a=0;a<x.length;++a){var M=y(x[a],t);if(z<M.depth){z=M.depth}if(b<M.height){b=M.height}S[a]=M}var q=0;if(e.value.rowGaps[h]){q=e.value.rowGaps[h].value;switch(q.unit){case"em":q=q.number;break;case"ex":q=q.number*c.metrics.emPerEx;break;default:console.error("Can't handle unit "+q.unit);q=0}if(q>0){q+=f;if(z<q){z=q}q=0}}S.height=b;S.depth=z;v+=b;S.pos=v;v+=z+q;p[h]=S}var A=v/2+c.metrics.axisHeight;var T=e.value.cols||[];var N=[];var C;for(a=0;a<s;++a){var R=T[a]||{};var E;if(a>0||e.value.hskipBeforeAndAfter){E=n.deflt(R.pregap,d);if(E!==0){C=g(["arraycolsep"],[]);C.style.width=E+"em";N.push(C)}}var P=[];for(h=0;h<r;++h){var D=p[h];var L=D[a];if(!L){continue}var O=D.pos-A;L.depth=D.depth;L.height=D.height;P.push({type:"elem",elem:L,shift:O})}P=l.makeVList(P,"individualShift",null,t);P=g(["col-align-"+(R.align||"c")],[P]);N.push(P);if(a<s-1||e.value.hskipBeforeAndAfter){E=n.deflt(R.postgap,d);if(E!==0){C=g(["arraycolsep"],[]);C.style.width=E+"em";N.push(C)}}}p=g(["mtable"],N);return g(["minner"],[p],t.getColor())},spacing:function(e,t,i){if(e.value==="\\ "||e.value==="\\space"||e.value===" "||e.value==="~"){return g(["mord","mspace"],[l.mathsym(e.value,e.mode)])}else{return g(["mord","mspace",l.spacingFunctions[e.value].className])}},llap:function(e,t,i){var h=g(["inner"],[y(e.value.body,t.reset())]);var a=g(["fix"],[]);return g(["llap",t.style.cls()],[h,a])},rlap:function(e,t,i){var h=g(["inner"],[y(e.value.body,t.reset())]);var a=g(["fix"],[]);return g(["rlap",t.style.cls()],[h,a])},op:function(e,t,i){var h;var a;var s=false;if(e.type==="supsub"){h=e.value.sup;a=e.value.sub;e=e.value.base;s=true}var p=["\\smallint"];var o=false;if(t.style.size===r.DISPLAY.size&&e.value.symbol&&!n.contains(p,e.value.body)){o=true}var d;var w=0;var u=0;if(e.value.symbol){var k=o?"Size2-Regular":"Size1-Regular";d=l.makeSymbol(e.value.body,k,"math",t.getColor(),["op-symbol",o?"large-op":"small-op","mop"]);w=(d.height-d.depth)/2-c.metrics.axisHeight*t.style.sizeMultiplier;u=d.italic}else{var m=[];for(var f=1;f<e.value.body.length;f++){m.push(l.mathsym(e.value.body[f],e.mode))}d=g(["mop"],m,t.getColor())}if(s){d=g([],[d]);var v,x,b,z;if(h){var S=y(h,t.withStyle(t.style.sup()));v=g([t.style.reset(),t.style.sup().cls()],[S]);x=Math.max(c.metrics.bigOpSpacing1,c.metrics.bigOpSpacing3-S.depth)}if(a){var M=y(a,t.withStyle(t.style.sub()));b=g([t.style.reset(),t.style.sub().cls()],[M]);z=Math.max(c.metrics.bigOpSpacing2,c.metrics.bigOpSpacing4-M.height)}var 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d=(h.height+h.depth)*t.style.sizeMultiplier;var w=d+o+a;var u=g(["sqrt-sign"],[s.customSizedDelim("\\surd",w,false,t,e.mode)],t.getColor());var k=u.height+u.depth-a;if(k>h.height+h.depth+o){o=(o+k-h.height-h.depth)/2}var m=-(h.height+o+a)+u.height;u.style.top=m+"em";u.height-=m;u.depth+=m;var f;if(h.height===0&&h.depth===0){f=g()}else{f=l.makeVList([{type:"elem",elem:h},{type:"kern",size:o},{type:"elem",elem:p},{type:"kern",size:a}],"firstBaseline",null,t)}if(!e.value.index){return g(["sqrt","mord"],[u,f])}else{var v=y(e.value.index,t.withStyle(r.SCRIPTSCRIPT));var x=g([t.style.reset(),r.SCRIPTSCRIPT.cls()],[v]);var b=Math.max(u.height,f.height);var z=Math.max(u.depth,f.depth);var S=.6*(b-z);var M=l.makeVList([{type:"elem",elem:x}],"shift",-S,t);var q=g(["root"],[M]);return g(["sqrt","mord"],[q,u,f])}},sizing:function(e,t,i){var h=o(e.value.value,t.withSize(e.value.size),i);var a=g(["mord"],[g(["sizing","reset-"+t.size,e.value.size,t.style.cls()],h)]);var 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g(["minner",t.style.cls()],h,t.getColor())},rule:function(e,t,i){var h=g(["mord","rule"],[],t.getColor());var a=0;if(e.value.shift){a=e.value.shift.number;if(e.value.shift.unit==="ex"){a*=c.metrics.xHeight}}var r=e.value.width.number;if(e.value.width.unit==="ex"){r*=c.metrics.xHeight}var l=e.value.height.number;if(e.value.height.unit==="ex"){l*=c.metrics.xHeight}a/=t.style.sizeMultiplier;r/=t.style.sizeMultiplier;l/=t.style.sizeMultiplier;h.style.borderRightWidth=r+"em";h.style.borderTopWidth=l+"em";h.style.bottom=a+"em";
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r.MathNode("mo",[w(e.value,e.mode)]);return t},open:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);return t},close:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);return t},inner:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);return t},punct:function(e){var t=new r.MathNode("mo",[w(e.value,e.mode)]);t.setAttribute("separator","true");return t},ordgroup:function(e,t){var i=m(e.value,t);var h=new r.MathNode("mrow",i);return h},text:function(e,t){var i=m(e.value.body,t);var h=new r.MathNode("mtext",i);return h},color:function(e,t){var i=m(e.value.value,t);var h=new r.MathNode("mstyle",i);h.setAttribute("mathcolor",e.value.color);return h},supsub:function(e,t){var i=[f(e.value.base,t)];if(e.value.sub){i.push(f(e.value.sub,t))}if(e.value.sup){i.push(f(e.value.sup,t))}var h;if(!e.value.sub){h="msup"}else if(!e.value.sup){h="msub"}else{h="msubsup"}var a=new r.MathNode(h,i);return a},genfrac:function(e,t){var i=new r.MathNode("mfrac",[f(e.value.numer,t),f(e.value.denom,t)]);if(!e.value.hasBarLine){i.setAttribute("linethickness","0px")}if(e.value.leftDelim!=null||e.value.rightDelim!=null){var h=[];if(e.value.leftDelim!=null){var a=new r.MathNode("mo",[new r.TextNode(e.value.leftDelim)]);a.setAttribute("fence","true");h.push(a)}h.push(i);if(e.value.rightDelim!=null){var l=new r.MathNode("mo",[new r.TextNode(e.value.rightDelim)]);l.setAttribute("fence","true");h.push(l)}var s=new r.MathNode("mrow",h);return s}return i},array:function(e,t){return new r.MathNode("mtable",e.value.body.map(function(e){return new r.MathNode("mtr",e.map(function(e){return new r.MathNode("mtd",[f(e,t)])}))}))},sqrt:function(e,t){var i;if(e.value.index){i=new r.MathNode("mroot",[f(e.value.body,t),f(e.value.index,t)])}else{i=new r.MathNode("msqrt",[f(e.value.body,t)])}return i},leftright:function(e,t){var i=m(e.value.body,t);if(e.value.left!=="."){var h=new r.MathNode("mo",[w(e.value.left,e.mode)]);h.setAttribute("fence","true");i.unshift(h)}if(e.value.right!=="."){var a=new r.MathNode("mo",[w(e.value.right,e.mode)]);a.setAttribute("fence","true");i.push(a)}var l=new r.MathNode("mrow",i);return l},accent:function(e,t){var i=new r.MathNode("mo",[w(e.value.accent,e.mode)]);var h=new r.MathNode("mover",[f(e.value.base,t),i]);h.setAttribute("accent","true");return h},spacing:function(e){var t;if(e.value==="\\ "||e.value==="\\space"||e.value===" "||e.value==="~"){t=new r.MathNode("mtext",[new r.TextNode("\xa0")])}else{t=new r.MathNode("mspace");t.setAttribute("width",h.spacingFunctions[e.value].size)}return t},op:function(e){var t;if(e.value.symbol){t=new r.MathNode("mo",[w(e.value.body,e.mode)])}else{t=new r.MathNode("mi",[new r.TextNode(e.value.body.slice(1))])}return t},katex:function(e){var t=new r.MathNode("mtext",[new r.TextNode("KaTeX")]);return t},font:function(e,t){var i=e.value.font;var h=f(e.value.body,t.withFont(i));return h},delimsizing:function(e){var t=[];if(e.value.value!=="."){t.push(w(e.value.value,e.mode))}var i=new r.MathNode("mo",t);if(e.value.delimType==="open"||e.value.delimType==="close"){i.setAttribute("fence","true")}else{i.setAttribute("fence","false")}return i},styling:function(e,t){var i=m(e.value.value,t);var h=new r.MathNode("mstyle",i);var a={display:["0","true"],text:["0","false"],script:["1","false"],scriptscript:["2","false"]};var l=a[e.value.style];h.setAttribute("scriptlevel",l[0]);h.setAttribute("displaystyle",l[1]);return h},sizing:function(e,t){var i=m(e.value.value,t);var a=new r.MathNode("mstyle",i);a.setAttribute("mathsize",h.sizingMultiplier[e.value.size]+"em");return a},overline:function(e,t){var i=new r.MathNode("mo",[new r.TextNode("\u203e")]);i.setAttribute("stretchy","true");var h=new r.MathNode("mover",[f(e.value.body,t),i]);h.setAttribute("accent","true");return h},rule:function(e){var t=new r.MathNode("mrow");return t},llap:function(e,t){var i=new r.MathNode("mpadded",[f(e.value.body,t)]);i.setAttribute("lspace","-1width");i.setAttribute("width","0px");return i},rlap:function(e,t){var i=new r.MathNode("mpadded",[f(e.value.body,t)]);i.setAttribute("width","0px");return i},phantom:function(e,t,i){var h=m(e.value.value,t);return new r.MathNode("mphantom",h)}};var m=function(e,t){var i=[];for(var h=0;h<e.length;h++){var a=e[h];i.push(f(a,t))}return i};var f=function(e,t){if(!e){return new r.MathNode("mrow")}if(k[e.type]){return k[e.type](e,t)}else{throw new s("Got group of unknown type: '"+e.type+"'")}};var v=function(e,t,i){i=i||new p({});var h=c.TEXT;if(i.displayMode){h=c.DISPLAY}var a=new l({style:h,size:"size5"});var s=m(e,a);var n=new r.MathNode("mrow",s);var g=new r.MathNode("annotation",[new r.TextNode(t)]);g.setAttribute("encoding","application/x-tex");var d=new r.MathNode("semantics",[n,g]);var w=new r.MathNode("math",[d]);return o(["katex-mathml"],[w])};t.exports=v},{"../src/Settings":7,"./Options":4,"./ParseError":5,"./Style":8,"./buildCommon":9,"./fontMetrics":16,"./mathMLTree":18,"./symbols":21,"./utils":22}],12:[function(e,t,i){var h=e("./buildHTML");var a=e("./buildMathML");var r=e("./buildCommon");var l=r.makeSpan;var s=function(e,t,i){var r=a(e,t,i);var s=h(e,i);var p=l(["katex"],[r,s]);if(i.displayMode){return l(["katex-display"],[p])}else{return p}};t.exports=s},{"./buildCommon":9,"./buildHTML":10,"./buildMathML":11}],13:[function(e,t,i){var h=e("./ParseError");var a=e("./Style");var r=e("./buildCommon");var l=e("./fontMetrics");var s=e("./symbols");var p=e("./utils");var c=r.makeSpan;var n=function(e,t){if(s.math[e]&&s.math[e].replace){return l.getCharacterMetrics(s.math[e].replace,t)}else{return l.getCharacterMetrics(e,t)}};var g=function(e,t,i){return r.makeSymbol(e,"Size"+t+"-Regular",i)};var o=function(e,t,i){var h=c(["style-wrap",i.style.reset(),t.cls()],[e]);var a=t.sizeMultiplier/i.style.sizeMultiplier;h.height*=a;h.depth*=a;h.maxFontSize=t.sizeMultiplier;return h};var d=function(e,t,i,h,a){var s=r.makeSymbol(e,"Main-Regular",a);var p=o(s,t,h);if(i){var c=(1-h.style.sizeMultiplier/t.sizeMultiplier)*l.metrics.axisHeight;p.style.top=c+"em";p.height-=c;p.depth+=c}return p};var w=function(e,t,i,h,r){var s=g(e,t,r);var p=o(c(["delimsizing","size"+t],[s],h.getColor()),a.TEXT,h);if(i){var n=(1-h.style.sizeMultiplier)*l.metrics.axisHeight;p.style.top=n+"em";p.height-=n;p.depth+=n}return p};var u=function(e,t,i){var h;if(t==="Size1-Regular"){h="delim-size1"}else if(t==="Size4-Regular"){h="delim-size4"}var a=c(["delimsizinginner",h],[c([],[r.makeSymbol(e,t,i)])]);return{type:"elem",elem:a}};var k=function(e,t,i,h,s){var p,g,d,w;p=d=w=e;g=null;var k="Size1-Regular";if(e==="\\uparrow"){d=w="\u23d0"}else if(e==="\\Uparrow"){d=w="\u2016"}else if(e==="\\downarrow"){p=d="\u23d0"}else if(e==="\\Downarrow"){p=d="\u2016"}else if(e==="\\updownarrow"){p="\\uparrow";d="\u23d0";w="\\downarrow"}else if(e==="\\Updownarrow"){p="\\Uparrow";d="\u2016";w="\\Downarrow"}else if(e==="["||e==="\\lbrack"){p="\u23a1";d="\u23a2";w="\u23a3";k="Size4-Regular"}else if(e==="]"||e==="\\rbrack"){p="\u23a4";d="\u23a5";w="\u23a6";k="Size4-Regular"}else if(e==="\\lfloor"){d=p="\u23a2";w="\u23a3";k="Size4-Regular"}else if(e==="\\lceil"){p="\u23a1";d=w="\u23a2";k="Size4-Regular"}else if(e==="\\rfloor"){d=p="\u23a5";w="\u23a6";k="Size4-Regular"}else if(e==="\\rceil"){p="\u23a4";d=w="\u23a5";k="Size4-Regular"}else if(e==="("){p="\u239b";d="\u239c";w="\u239d";k="Size4-Regular"}else if(e===")"){p="\u239e";d="\u239f";w="\u23a0";k="Size4-Regular"}else if(e==="\\{"||e==="\\lbrace"){p="\u23a7";g="\u23a8";w="\u23a9";d="\u23aa";k="Size4-Regular"}else if(e==="\\}"||e==="\\rbrace"){p="\u23ab";g="\u23ac";w="\u23ad";d="\u23aa";k="Size4-Regular"}else if(e==="\\surd"){p="\ue001";w="\u23b7";d="\ue000";k="Size4-Regular"}var m=n(p,k);var f=m.height+m.depth;var v=n(d,k);var y=v.height+v.depth;var x=n(w,k);var b=x.height+x.depth;var z=0;var S=1;if(g!==null){var M=n(g,k);z=M.height+M.depth;S=2}var q=f+b+z;var A=Math.ceil((t-q)/(S*y));var T=q+A*S*y;var N=l.metrics.axisHeight;if(i){N*=h.style.sizeMultiplier}var C=T/2-N;var R=[];R.push(u(w,k,s));var E;if(g===null){for(E=0;E<A;E++){R.push(u(d,k,s))}}else{for(E=0;E<A;E++){R.push(u(d,k,s))}R.push(u(g,k,s));for(E=0;E<A;E++){R.push(u(d,k,s))}}R.push(u(p,k,s));var P=r.makeVList(R,"bottom",C,h);return o(c(["delimsizing","mult"],[P],h.getColor()),a.TEXT,h)};var m=["(",")","[","\\lbrack","]","\\rbrack","\\{","\\lbrace","\\}","\\rbrace","\\lfloor","\\rfloor","\\lceil","\\rceil","\\surd"];var f=["\\uparrow","\\downarrow","\\updownarrow","\\Uparrow","\\Downarrow","\\Updownarrow","|","\\|","\\vert","\\Vert"];var v=["<",">","\\langle","\\rangle","/","\\backslash"];var y=[0,1.2,1.8,2.4,3];var x=function(e,t,i,a){if(e==="<"){e="\\langle"}else 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diff --git a/client/schemes/android.css b/client/schemes/android.css
new file mode 100644
index 0000000..35c2165
--- /dev/null
+++ b/client/schemes/android.css
@@ -0,0 +1,47 @@
+body {
+  background: #212121;
+  color: #e0e0e0;
+}
+input,
+textarea {
+  color: #e0e0e0;
+}
+.messages {
+  border-color: #858585;
+}
+.nick {
+  color: #0099CC;
+}
+.trip {
+  color: #626261;
+}
+.text a {
+  color: #f2f2f2;
+}
+.admin .nick {
+  color: #e94749;
+}
+.mod .nick {
+  color: #33B5E5;
+}
+.me .nick {
+  color: #9568AA;
+}
+.info .nick,
+.info .text {
+  color: #99C21D;
+}
+.warn .nick,
+.warn .text {
+  color: #fbba37;
+}
+#footer {
+  background: #212121;
+}
+#sidebar {
+  background: #333333;
+  border-color: #858585;
+}
+#chatform {
+  border-color: #858585;
+}
diff --git a/client/schemes/atelier-dune.css b/client/schemes/atelier-dune.css
new file mode 100644
index 0000000..56175f4
--- /dev/null
+++ b/client/schemes/atelier-dune.css
@@ -0,0 +1,47 @@
+body {
+  background: #20201d;
+  color: #a6a28c;
+}
+input,
+textarea {
+  color: #a6a28c;
+}
+.messages {
+  border-color: #7d7a68;
+}
+.nick {
+  color: #6684e1;
+}
+.trip {
+  color: #6e6b5e;
+}
+.text a {
+  color: #e8e4cf;
+}
+.admin .nick {
+  color: #d73737;
+}
+.mod .nick {
+  color: #1fad83;
+}
+.me .nick {
+  color: #b854d4;
+}
+.info .nick,
+.info .text {
+  color: #60ac39;
+}
+.warn .nick,
+.warn .text {
+  color: #cfb017;
+}
+#footer {
+  background: #20201d;
+}
+#sidebar {
+  background: #292824;
+  border-color: #7d7a68;
+}
+#chatform {
+  border-color: #7d7a68;
+}
diff --git a/client/schemes/atelier-forest.css b/client/schemes/atelier-forest.css
new file mode 100644
index 0000000..c022005
--- /dev/null
+++ b/client/schemes/atelier-forest.css
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+body {
+  background: #1b1918;
+  color: #a8a19f;
+}
+input,
+textarea {
+  color: #a8a19f;
+}
+.messages {
+  border-color: #766e6b;
+}
+.nick {
+  color: #407ee7;
+}
+.trip {
+  color: #68615e;
+}
+.text a {
+  color: #e6e2e0;
+}
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+  color: #f22c40;
+}
+.mod .nick {
+  color: #00ad9c;
+}
+.me .nick {
+  color: #6666ea;
+}
+.info .nick,
+.info .text {
+  color: #5ab738;
+}
+.warn .nick,
+.warn .text {
+  color: #d5911a;
+}
+#footer {
+  background: #1b1918;
+}
+#sidebar {
+  background: #2c2421;
+  border-color: #766e6b;
+}
+#chatform {
+  border-color: #766e6b;
+}
diff --git a/client/schemes/atelier-heath.css b/client/schemes/atelier-heath.css
new file mode 100644
index 0000000..5c6a77f
--- /dev/null
+++ b/client/schemes/atelier-heath.css
@@ -0,0 +1,47 @@
+body {
+  background: #1b181b;
+  color: #ab9bab;
+}
+input,
+textarea {
+  color: #ab9bab;
+}
+.messages {
+  border-color: #776977;
+}
+.nick {
+  color: #516aec;
+}
+.trip {
+  color: #695d69;
+}
+.text a {
+  color: #d8cad8;
+}
+.admin .nick {
+  color: #ca402b;
+}
+.mod .nick {
+  color: #159393;
+}
+.me .nick {
+  color: #7b59c0;
+}
+.info .nick,
+.info .text {
+  color: #379a37;
+}
+.warn .nick,
+.warn .text {
+  color: #bb8a35;
+}
+#footer {
+  background: #1b181b;
+}
+#sidebar {
+  background: #292329;
+  border-color: #776977;
+}
+#chatform {
+  border-color: #776977;
+}
diff --git a/client/schemes/atelier-lakeside.css b/client/schemes/atelier-lakeside.css
new file mode 100644
index 0000000..e0dbbbe
--- /dev/null
+++ b/client/schemes/atelier-lakeside.css
@@ -0,0 +1,47 @@
+body {
+  background: #161b1d;
+  color: #7ea2b4;
+}
+input,
+textarea {
+  color: #7ea2b4;
+}
+.messages {
+  border-color: #5a7b8c;
+}
+.nick {
+  color: #257fad;
+}
+.trip {
+  color: #516d7b;
+}
+.text a {
+  color: #c1e4f6;
+}
+.admin .nick {
+  color: #d22d72;
+}
+.mod .nick {
+  color: #2d8f6f;
+}
+.me .nick {
+  color: #5d5db1;
+}
+.info .nick,
+.info .text {
+  color: #568c3b;
+}
+.warn .nick,
+.warn .text {
+  color: #8a8a0f;
+}
+#footer {
+  background: #161b1d;
+}
+#sidebar {
+  background: #1f292e;
+  border-color: #5a7b8c;
+}
+#chatform {
+  border-color: #5a7b8c;
+}
diff --git a/client/schemes/atelier-seaside.css b/client/schemes/atelier-seaside.css
new file mode 100644
index 0000000..b494c27
--- /dev/null
+++ b/client/schemes/atelier-seaside.css
@@ -0,0 +1,47 @@
+body {
+  background: #131513;
+  color: #8ca68c;
+}
+input,
+textarea {
+  color: #8ca68c;
+}
+.messages {
+  border-color: #687d68;
+}
+.nick {
+  color: #3d62f5;
+}
+.trip {
+  color: #5e6e5e;
+}
+.text a {
+  color: #cfe8cf;
+}
+.admin .nick {
+  color: #e6193c;
+}
+.mod .nick {
+  color: #1999b3;
+}
+.me .nick {
+  color: #ad2bee;
+}
+.info .nick,
+.info .text {
+  color: #29a329;
+}
+.warn .nick,
+.warn .text {
+  color: #c3c322;
+}
+#footer {
+  background: #131513;
+}
+#sidebar {
+  background: #242924;
+  border-color: #687d68;
+}
+#chatform {
+  border-color: #687d68;
+}
diff --git a/client/schemes/bright.css b/client/schemes/bright.css
new file mode 100644
index 0000000..abeb2da
--- /dev/null
+++ b/client/schemes/bright.css
@@ -0,0 +1,47 @@
+body {
+  background: #000000;
+  color: #e0e0e0;
+}
+input,
+textarea {
+  color: #e0e0e0;
+}
+.messages {
+  border-color: #b0b0b0;
+}
+.nick {
+  color: #6fb3d2;
+}
+.trip {
+  color: #505050;
+}
+.text a {
+  color: #f5f5f5;
+}
+.admin .nick {
+  color: #fb0120;
+}
+.mod .nick {
+  color: #76c7b7;
+}
+.me .nick {
+  color: #d381c3;
+}
+.info .nick,
+.info .text {
+  color: #a1c659;
+}
+.warn .nick,
+.warn .text {
+  color: #fda331;
+}
+#footer {
+  background: #000000;
+}
+#sidebar {
+  background: #303030;
+  border-color: #b0b0b0;
+}
+#chatform {
+  border-color: #b0b0b0;
+}
diff --git a/client/schemes/chalk.css b/client/schemes/chalk.css
new file mode 100644
index 0000000..c004c15
--- /dev/null
+++ b/client/schemes/chalk.css
@@ -0,0 +1,47 @@
+body {
+  background: #151515;
+  color: #d0d0d0;
+}
+input,
+textarea {
+  color: #d0d0d0;
+}
+.messages {
+  border-color: #505050;
+}
+.nick {
+  color: #6fc2ef;
+}
+.trip {
+  color: #303030;
+}
+.text a {
+  color: #e0e0e0;
+}
+.admin .nick {
+  color: #fb9fb1;
+}
+.mod .nick {
+  color: #12cfc0;
+}
+.me .nick {
+  color: #e1a3ee;
+}
+.info .nick,
+.info .text {
+  color: #acc267;
+}
+.warn .nick,
+.warn .text {
+  color: #ddb26f;
+}
+#footer {
+  background: #151515;
+}
+#sidebar {
+  background: #202020;
+  border-color: #505050;
+}
+#chatform {
+  border-color: #505050;
+}
diff --git a/client/schemes/default.css b/client/schemes/default.css
new file mode 100644
index 0000000..f8a6b4d
--- /dev/null
+++ b/client/schemes/default.css
@@ -0,0 +1,47 @@
+body {
+  background: #151515;
+  color: #d0d0d0;
+}
+input,
+textarea {
+  color: #d0d0d0;
+}
+.messages {
+  border-color: #505050;
+}
+.nick {
+  color: #6a9fb5;
+}
+.trip {
+  color: #303030;
+}
+.text a {
+  color: #e0e0e0;
+}
+.admin .nick {
+  color: #ac4142;
+}
+.mod .nick {
+  color: #75b5aa;
+}
+.me .nick {
+  color: #aa759f;
+}
+.info .nick,
+.info .text {
+  color: #90a959;
+}
+.warn .nick,
+.warn .text {
+  color: #f4bf75;
+}
+#footer {
+  background: #151515;
+}
+#sidebar {
+  background: #202020;
+  border-color: #505050;
+}
+#chatform {
+  border-color: #505050;
+}
diff --git a/client/schemes/eighties.css b/client/schemes/eighties.css
new file mode 100644
index 0000000..e0ccebb
--- /dev/null
+++ b/client/schemes/eighties.css
@@ -0,0 +1,47 @@
+body {
+  background: #2d2d2d;
+  color: #d3d0c8;
+}
+input,
+textarea {
+  color: #d3d0c8;
+}
+.messages {
+  border-color: #747369;
+}
+.nick {
+  color: #6699cc;
+}
+.trip {
+  color: #515151;
+}
+.text a {
+  color: #e8e6df;
+}
+.admin .nick {
+  color: #f2777a;
+}
+.mod .nick {
+  color: #66cccc;
+}
+.me .nick {
+  color: #cc99cc;
+}
+.info .nick,
+.info .text {
+  color: #99cc99;
+}
+.warn .nick,
+.warn .text {
+  color: #ffcc66;
+}
+#footer {
+  background: #2d2d2d;
+}
+#sidebar {
+  background: #393939;
+  border-color: #747369;
+}
+#chatform {
+  border-color: #747369;
+}
diff --git a/client/schemes/greenscreen.css b/client/schemes/greenscreen.css
new file mode 100644
index 0000000..fd7c794
--- /dev/null
+++ b/client/schemes/greenscreen.css
@@ -0,0 +1,47 @@
+body {
+  background: #001100;
+  color: #00bb00;
+}
+input,
+textarea {
+  color: #00bb00;
+}
+.messages {
+  border-color: #007700;
+}
+.nick {
+  color: #009900;
+}
+.trip {
+  color: #005500;
+}
+.text a {
+  color: #00dd00;
+}
+.admin .nick {
+  color: #007700;
+}
+.mod .nick {
+  color: #005500;
+}
+.me .nick {
+  color: #00bb00;
+}
+.info .nick,
+.info .text {
+  color: #00bb00;
+}
+.warn .nick,
+.warn .text {
+  color: #007700;
+}
+#footer {
+  background: #001100;
+}
+#sidebar {
+  background: #003300;
+  border-color: #007700;
+}
+#chatform {
+  border-color: #007700;
+}
diff --git a/client/schemes/mocha.css b/client/schemes/mocha.css
new file mode 100644
index 0000000..7b7a439
--- /dev/null
+++ b/client/schemes/mocha.css
@@ -0,0 +1,47 @@
+body {
+  background: #3B3228;
+  color: #d0c8c6;
+}
+input,
+textarea {
+  color: #d0c8c6;
+}
+.messages {
+  border-color: #7e705a;
+}
+.nick {
+  color: #8ab3b5;
+}
+.trip {
+  color: #645240;
+}
+.text a {
+  color: #e9e1dd;
+}
+.admin .nick {
+  color: #cb6077;
+}
+.mod .nick {
+  color: #7bbda4;
+}
+.me .nick {
+  color: #a89bb9;
+}
+.info .nick,
+.info .text {
+  color: #beb55b;
+}
+.warn .nick,
+.warn .text {
+  color: #f4bc87;
+}
+#footer {
+  background: #3B3228;
+}
+#sidebar {
+  background: #534636;
+  border-color: #7e705a;
+}
+#chatform {
+  border-color: #7e705a;
+}
diff --git a/client/schemes/monokai.css b/client/schemes/monokai.css
new file mode 100644
index 0000000..adef41d
--- /dev/null
+++ b/client/schemes/monokai.css
@@ -0,0 +1,47 @@
+body {
+  background: #272822;
+  color: #f8f8f2;
+}
+input,
+textarea {
+  color: #f8f8f2;
+}
+.messages {
+  border-color: #75715e;
+}
+.nick {
+  color: #66d9ef;
+}
+.trip {
+  color: #49483e;
+}
+.text a {
+  color: #f5f4f1;
+}
+.admin .nick {
+  color: #f92672;
+}
+.mod .nick {
+  color: #a1efe4;
+}
+.me .nick {
+  color: #ae81ff;
+}
+.info .nick,
+.info .text {
+  color: #a6e22e;
+}
+.warn .nick,
+.warn .text {
+  color: #f4bf75;
+}
+#footer {
+  background: #272822;
+}
+#sidebar {
+  background: #383830;
+  border-color: #75715e;
+}
+#chatform {
+  border-color: #75715e;
+}
diff --git a/client/schemes/nese.css b/client/schemes/nese.css
new file mode 100644
index 0000000..8fe5844
--- /dev/null
+++ b/client/schemes/nese.css
@@ -0,0 +1,47 @@
+body {
+  background: #030303;
+  color: #cccccc;
+}
+input,
+textarea {
+  color: #cccccc;
+}
+.messages {
+  border-color: #737373;
+}
+.nick {
+  color: #388bb8;
+}
+.trip {
+  color: #333333;
+}
+.text a {
+  color: #f2f2f2;
+}
+.admin .nick {
+  color: #f73e30;
+}
+.mod .nick {
+  color: #29a288;
+}
+.me .nick {
+  color: #9c73a7;
+}
+.info .nick,
+.info .text {
+  color: #1ab857;
+}
+.warn .nick,
+.warn .text {
+  color: #faba3d;
+}
+#footer {
+  background: #030303;
+}
+#sidebar {
+  background: #0d0d0d;
+  border-color: #737373;
+}
+#chatform {
+  border-color: #737373;
+}
diff --git a/client/schemes/ocean.css b/client/schemes/ocean.css
new file mode 100644
index 0000000..c4ba031
--- /dev/null
+++ b/client/schemes/ocean.css
@@ -0,0 +1,47 @@
+body {
+  background: #2b303b;
+  color: #c0c5ce;
+}
+input,
+textarea {
+  color: #c0c5ce;
+}
+.messages {
+  border-color: #65737e;
+}
+.nick {
+  color: #8fa1b3;
+}
+.trip {
+  color: #4f5b66;
+}
+.text a {
+  color: #dfe1e8;
+}
+.admin .nick {
+  color: #bf616a;
+}
+.mod .nick {
+  color: #96b5b4;
+}
+.me .nick {
+  color: #b48ead;
+}
+.info .nick,
+.info .text {
+  color: #a3be8c;
+}
+.warn .nick,
+.warn .text {
+  color: #ebcb8b;
+}
+#footer {
+  background: #2b303b;
+}
+#sidebar {
+  background: #343d46;
+  border-color: #65737e;
+}
+#chatform {
+  border-color: #65737e;
+}
diff --git a/client/schemes/pop.css b/client/schemes/pop.css
new file mode 100644
index 0000000..697170b
--- /dev/null
+++ b/client/schemes/pop.css
@@ -0,0 +1,47 @@
+body {
+  background: #000000;
+  color: #d0d0d0;
+}
+input,
+textarea {
+  color: #d0d0d0;
+}
+.messages {
+  border-color: #505050;
+}
+.nick {
+  color: #0e5a94;
+}
+.trip {
+  color: #303030;
+}
+.text a {
+  color: #e0e0e0;
+}
+.admin .nick {
+  color: #eb008a;
+}
+.mod .nick {
+  color: #00aabb;
+}
+.me .nick {
+  color: #b31e8d;
+}
+.info .nick,
+.info .text {
+  color: #37b349;
+}
+.warn .nick,
+.warn .text {
+  color: #f8ca12;
+}
+#footer {
+  background: #000000;
+}
+#sidebar {
+  background: #202020;
+  border-color: #505050;
+}
+#chatform {
+  border-color: #505050;
+}
diff --git a/client/schemes/railscasts.css b/client/schemes/railscasts.css
new file mode 100644
index 0000000..886240a
--- /dev/null
+++ b/client/schemes/railscasts.css
@@ -0,0 +1,47 @@
+body {
+  background: #2b2b2b;
+  color: #e6e1dc;
+}
+input,
+textarea {
+  color: #e6e1dc;
+}
+.messages {
+  border-color: #5a647e;
+}
+.nick {
+  color: #6d9cbe;
+}
+.trip {
+  color: #3a4055;
+}
+.text a {
+  color: #f4f1ed;
+}
+.admin .nick {
+  color: #da4939;
+}
+.mod .nick {
+  color: #519f50;
+}
+.me .nick {
+  color: #b6b3eb;
+}
+.info .nick,
+.info .text {
+  color: #a5c261;
+}
+.warn .nick,
+.warn .text {
+  color: #ffc66d;
+}
+#footer {
+  background: #2b2b2b;
+}
+#sidebar {
+  background: #272935;
+  border-color: #5a647e;
+}
+#chatform {
+  border-color: #5a647e;
+}
diff --git a/client/schemes/solarized.css b/client/schemes/solarized.css
new file mode 100644
index 0000000..3435491
--- /dev/null
+++ b/client/schemes/solarized.css
@@ -0,0 +1,47 @@
+body {
+  background: #002b36;
+  color: #93a1a1;
+}
+input,
+textarea {
+  color: #93a1a1;
+}
+.messages {
+  border-color: #657b83;
+}
+.nick {
+  color: #268bd2;
+}
+.trip {
+  color: #586e75;
+}
+.text a {
+  color: #eee8d5;
+}
+.admin .nick {
+  color: #dc322f;
+}
+.mod .nick {
+  color: #2aa198;
+}
+.me .nick {
+  color: #6c71c4;
+}
+.info .nick,
+.info .text {
+  color: #859900;
+}
+.warn .nick,
+.warn .text {
+  color: #b58900;
+}
+#footer {
+  background: #002b36;
+}
+#sidebar {
+  background: #073642;
+  border-color: #657b83;
+}
+#chatform {
+  border-color: #657b83;
+}
diff --git a/client/schemes/tomorrow.css b/client/schemes/tomorrow.css
new file mode 100644
index 0000000..80a8db1
--- /dev/null
+++ b/client/schemes/tomorrow.css
@@ -0,0 +1,47 @@
+body {
+  background: #1d1f21;
+  color: #c5c8c6;
+}
+input,
+textarea {
+  color: #c5c8c6;
+}
+.messages {
+  border-color: #969896;
+}
+.nick {
+  color: #81a2be;
+}
+.trip {
+  color: #373b41;
+}
+.text a {
+  color: #e0e0e0;
+}
+.admin .nick {
+  color: #cc6666;
+}
+.mod .nick {
+  color: #8abeb7;
+}
+.me .nick {
+  color: #b294bb;
+}
+.info .nick,
+.info .text {
+  color: #b5bd68;
+}
+.warn .nick,
+.warn .text {
+  color: #f0c674;
+}
+#footer {
+  background: #1d1f21;
+}
+#sidebar {
+  background: #282a2e;
+  border-color: #969896;
+}
+#chatform {
+  border-color: #969896;
+}
diff --git a/client/structure.css b/client/structure.css
new file mode 100644
index 0000000..18abc33
--- /dev/null
+++ b/client/structure.css
@@ -0,0 +1,137 @@
+body {
+  padding: 0;
+  margin: 0;
+  overflow-y: scroll;
+}
+body,
+input,
+textarea {
+  font-family: 'DejaVu Sans Mono', monospace;
+  font-size: 12px;
+}
+input[type="checkbox"] {
+  margin: 0;
+  margin-right: 1em;
+}
+label {
+  vertical-align: 3px;
+}
+input,
+textarea {
+  background: none;
+  border: none;
+  outline: none;
+  resize: none;
+}
+h4 {
+  font-size: 12px;
+  margin: 1em 0;
+  font-weight: bold;
+}
+pre {
+  tab-size: 2;
+  white-space: pre-wrap;
+  word-wrap: break-word;
+  tab-size: 4;
+  -moz-tab-size: 4;
+}
+a {
+  color: inherit;
+  text-decoration: none;
+  cursor: pointer;
+}
+a:hover {
+  text-decoration: underline;
+}
+ul {
+  padding-left: 0;
+}
+ul li {
+  list-style: inside;
+}
+.hidden {
+  display: none;
+}
+.container {
+  max-width: 600px;
+  margin: 0 auto;
+}
+.messages {
+  border-left: 1px solid;
+}
+#messages {
+  padding-top: 2em;
+}
+.message {
+  padding-bottom: 1em;
+}
+.nick {
+  float: left;
+  width: 16em;
+  margin-left: -17em;
+  margin-right: 1em;
+  text-align: right;
+  white-space: nowrap;
+  overflow: hidden;
+}
+.trip {
+  font-size: 10px;
+}
+.text {
+  margin: 0;
+  margin-left: 1em;
+}
+.text p {
+  margin: 0;
+}
+#footer {
+  position: fixed;
+  bottom: 0;
+  width: 100%;
+}
+#chatform {
+  border-top: 1px solid;
+}
+#chatinput {
+  width: 100%;
+  padding: 1em;
+  box-sizing: border-box;
+}
+#sidebar {
+  position: fixed;
+  top: 0;
+  bottom: 0;
+  right: 0;
+  padding: 1em;
+  border-left: solid 1px;
+  overflow-y: auto;
+}
+#sidebar-content {
+  width: 180px;
+}
+@media only screen and (max-width: 600px) {
+  .messages {
+    border: none;
+  }
+  #messages {
+    padding: 0.5em;
+  }
+  .message {
+    padding-bottom: 0.5em;
+  }
+  .nick {
+    margin: 0;
+    float: none;
+    text-align: left;
+    display: inline;
+  }
+  .text {
+    display: inline;
+  }
+  #sidebar {
+    top: 0.5em;
+    bottom: auto;
+    right: 0.5em;
+    border: none;
+  }
+}
diff --git a/client/style.css b/client/style.css
new file mode 100644
index 0000000..18abc33
--- /dev/null
+++ b/client/style.css
@@ -0,0 +1,137 @@
+body {
+  padding: 0;
+  margin: 0;
+  overflow-y: scroll;
+}
+body,
+input,
+textarea {
+  font-family: 'DejaVu Sans Mono', monospace;
+  font-size: 12px;
+}
+input[type="checkbox"] {
+  margin: 0;
+  margin-right: 1em;
+}
+label {
+  vertical-align: 3px;
+}
+input,
+textarea {
+  background: none;
+  border: none;
+  outline: none;
+  resize: none;
+}
+h4 {
+  font-size: 12px;
+  margin: 1em 0;
+  font-weight: bold;
+}
+pre {
+  tab-size: 2;
+  white-space: pre-wrap;
+  word-wrap: break-word;
+  tab-size: 4;
+  -moz-tab-size: 4;
+}
+a {
+  color: inherit;
+  text-decoration: none;
+  cursor: pointer;
+}
+a:hover {
+  text-decoration: underline;
+}
+ul {
+  padding-left: 0;
+}
+ul li {
+  list-style: inside;
+}
+.hidden {
+  display: none;
+}
+.container {
+  max-width: 600px;
+  margin: 0 auto;
+}
+.messages {
+  border-left: 1px solid;
+}
+#messages {
+  padding-top: 2em;
+}
+.message {
+  padding-bottom: 1em;
+}
+.nick {
+  float: left;
+  width: 16em;
+  margin-left: -17em;
+  margin-right: 1em;
+  text-align: right;
+  white-space: nowrap;
+  overflow: hidden;
+}
+.trip {
+  font-size: 10px;
+}
+.text {
+  margin: 0;
+  margin-left: 1em;
+}
+.text p {
+  margin: 0;
+}
+#footer {
+  position: fixed;
+  bottom: 0;
+  width: 100%;
+}
+#chatform {
+  border-top: 1px solid;
+}
+#chatinput {
+  width: 100%;
+  padding: 1em;
+  box-sizing: border-box;
+}
+#sidebar {
+  position: fixed;
+  top: 0;
+  bottom: 0;
+  right: 0;
+  padding: 1em;
+  border-left: solid 1px;
+  overflow-y: auto;
+}
+#sidebar-content {
+  width: 180px;
+}
+@media only screen and (max-width: 600px) {
+  .messages {
+    border: none;
+  }
+  #messages {
+    padding: 0.5em;
+  }
+  .message {
+    padding-bottom: 0.5em;
+  }
+  .nick {
+    margin: 0;
+    float: none;
+    text-align: left;
+    display: inline;
+  }
+  .text {
+    display: inline;
+  }
+  #sidebar {
+    top: 0.5em;
+    bottom: auto;
+    right: 0.5em;
+    border: none;
+  }
+}
diff --git a/server/README.md b/server/README.md
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/server/README.md
diff --git a/server/main.js b/server/main.js
new file mode 100644
index 0000000..2e66cc1
--- /dev/null
+++ b/server/main.js
@@ -0,0 +1,34 @@
+/**
+  * HackChat main server entry point
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+// import required classes
+const Managers = require('./src/managers');
+const wsServer = require('./src/core/server');
+
+// initialize core reference
+const core = {};
+
+// load and initialize main manager classes
+core.managers = {};
+core.managers.dynamicImports = global.dynamicImports = new Managers.ImportsManager(core, __dirname);
+core.managers.dynamicImports.init();
+
+const configManager = core.managers.config = new Managers.Config(core, __dirname, core.managers.dynamicImports);
+core.config = configManager.loadSync();
+
+const commands = core.commands = new Managers.CommandManager(core);
+commands.loadCommands();
+
+const stats = core.managers.stats = new Managers.Stats(core);
+stats.set('start-time', process.hrtime());
+
+// initialize and start the server
+const server = new wsServer(core);
diff --git a/server/package-lock.json b/server/package-lock.json
new file mode 100644
index 0000000..32a861d
--- /dev/null
+++ b/server/package-lock.json
@@ -0,0 +1,396 @@
+{
+  "name": "hack.chat-v2",
+  "version": "2.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+      "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "requires": {
+        "color-convert": "1.9.1"
+      }
+    },
+    "async": {
+      "version": "0.9.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
+      "integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0="
+    },
+    "async-limiter": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
+      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
+    },
+    "babel-runtime": {
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+      "requires": {
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+}
diff --git a/server/package.json b/server/package.json
new file mode 100644
index 0000000..db47e43
--- /dev/null
+++ b/server/package.json
@@ -0,0 +1,29 @@
+{
+  "name": "hack.chat-v2",
+  "version": "2.0.0",
+  "description": "a minimal distraction free chat application",
+  "main": "main.js",
+  "engines": {
+    "node": ">= 8.10.0",
+    "npm": ">= 5.7.1"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "config": "node src/scripts/configure.js",
+    "debug": "node src/scripts/debug.js",
+    "dev": "node src/scripts/debug.js"
+  },
+  "author": "Marzavec",
+  "license": "WTFPL",
+  "dependencies": {
+    "chalk": "^2.3.2",
+    "common-tags": "^1.7.2",
+    "dateformat": "^3.0.3",
+    "deasync": "^0.1.12",
+    "didyoumean2": "^1.3.0",
+    "fs-extra": "^5.0.0",
+    "prompt": "^1.0.0",
+    "readdir-recursive": "0.0.4",
+    "ws": "^5.0.0"
+  }
+}
diff --git a/server/src/commands/admin/addmod.js b/server/src/commands/admin/addmod.js
new file mode 100644
index 0000000..dba5aba
--- /dev/null
+++ b/server/src/commands/admin/addmod.js
@@ -0,0 +1,47 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  if (socket.uType != 'admin') {
+    // ignore if not admin
+    return;
+  }
+
+  let mod = {
+    trip: data.trip
+  }
+
+  core.config.mods.push(mod); // purposely not using `config.set()` to avoid auto-save
+
+  for (let client of server.clients) {
+    if (typeof client.trip !== 'undefined' && client.trip === data.trip) {
+      client.uType = 'mod';
+
+      server.reply({
+        cmd: 'info',
+        text: 'You are now a mod.'
+      }, client);
+    }
+  }
+
+  server.reply({
+    cmd: 'info',
+    text: `Added mod trip: ${data.trip}`
+  }, socket);
+
+  server.broadcast({
+    cmd: 'info',
+    text: `Added mod trip: ${data.trip}`
+  }, { uType: 'mod' });
+};
+
+exports.requiredData = ['trip'];
+
+exports.info = {
+  name: 'addmod',
+  usage: 'addmod {trip}',
+  description: 'Adds target trip to the config as a mod and upgrades the socket type'
+};
diff --git a/server/src/commands/admin/listusers.js b/server/src/commands/admin/listusers.js
new file mode 100644
index 0000000..a853518
--- /dev/null
+++ b/server/src/commands/admin/listusers.js
@@ -0,0 +1,41 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  if (socket.uType != 'admin') {
+    // ignore if not admin
+    return;
+  }
+
+  let channels = {};
+  for (var client of server.clients) {
+    if (client.channel) {
+      if (!channels[client.channel]) {
+        channels[client.channel] = [];
+      }
+      channels[client.channel].push(client.nick);
+    }
+  }
+
+  let lines = [];
+  for (let channel in channels) {
+    lines.push(`?${channel} ${channels[channel].join(", ")}`);
+  }
+
+  let text = '';
+  text += lines.join("\n");
+
+  server.reply({
+    cmd: 'info',
+    text: text
+  }, socket);
+};
+
+exports.info = {
+  name: 'listusers',
+  usage: 'listusers',
+  description: 'Outputs all current channels and sockets in those channels'
+};
diff --git a/server/src/commands/admin/reload.js b/server/src/commands/admin/reload.js
new file mode 100644
index 0000000..7aefbcf
--- /dev/null
+++ b/server/src/commands/admin/reload.js
@@ -0,0 +1,34 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  if (socket.uType != 'admin') {
+    // ignore if not admin
+    return;
+  }
+
+  let loadResult = core.managers.dynamicImports.reloadDirCache('src/commands');
+  loadResult += core.commands.loadCommands();
+
+  if (loadResult == '')
+    loadResult = 'Commands reloaded without errors!';
+
+  server.reply({
+    cmd: 'info',
+    text: loadResult
+  }, socket);
+
+  server.broadcast({
+    cmd: 'info',
+    text: loadResult
+  }, { uType: 'mod' });
+};
+
+exports.info = {
+  name: 'reload',
+  usage: 'reload',
+  description: '(Re)loads any new commands into memory, outputs errors if any'
+};
diff --git a/server/src/commands/admin/saveconfig.js b/server/src/commands/admin/saveconfig.js
new file mode 100644
index 0000000..e1a3ebe
--- /dev/null
+++ b/server/src/commands/admin/saveconfig.js
@@ -0,0 +1,34 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  if (socket.uType != 'admin') {
+    // ignore if not admin
+    return;
+  }
+
+  let saveResult = core.managers.config.save();
+
+  if (!saveResult) {
+    server.reply({
+      cmd: 'warn',
+      text: 'Failed to save config, check logs.'
+    }, client);
+
+    return;
+  }
+
+  server.broadcast({
+    cmd: 'info',
+    text: 'Config saved!'
+  }, { uType: 'mod' });
+};
+
+exports.info = {
+  name: 'saveconfig',
+  usage: 'saveconfig',
+  description: 'Saves current config'
+};
diff --git a/server/src/commands/admin/shout.js b/server/src/commands/admin/shout.js
new file mode 100644
index 0000000..c3cfded
--- /dev/null
+++ b/server/src/commands/admin/shout.js
@@ -0,0 +1,25 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  if (socket.uType != 'admin') {
+    // ignore if not admin
+    return;
+  }
+
+  server.broadcast( {
+    cmd: 'info',
+    text: `Server Notice: ${data.text}`
+  }, {});
+};
+
+exports.requiredData = ['text'];
+
+exports.info = {
+  name: 'shout',
+  usage: 'shout {text}',
+  description: 'Displays passed text to every client connected'
+};
diff --git a/server/src/commands/core/chat.js b/server/src/commands/core/chat.js
new file mode 100644
index 0000000..4fe3b80
--- /dev/null
+++ b/server/src/commands/core/chat.js
@@ -0,0 +1,56 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  // process text
+  let text = String(data.text);
+  // strip newlines from beginning and end
+  text = text.replace(/^\s*\n|^\s+$|\n\s*$/g, '');
+  // replace 3+ newlines with just 2 newlines
+  text = text.replace(/\n{3,}/g, "\n\n");
+  if (!text) {
+    // lets not send empty text?
+    return;
+  }
+
+  let score = text.length / 83 / 4;
+  if (server._police.frisk(socket.remoteAddress, score)) {
+    server.reply({
+      cmd: 'warn',
+      text: 'You are sending too much text. Wait a moment and try again.\nPress the up arrow key to restore your last message.'
+    }, socket);
+
+    return;
+  }
+
+  let payload = {
+    cmd: 'chat',
+    nick: socket.nick,
+    text: text
+  };
+
+  if (socket.uType == 'admin') {
+    payload.admin = true;
+  } else if (socket.uType == 'mod') {
+    payload.mod = true;
+  }
+
+  if (socket.trip) {
+    payload.trip = socket.trip;
+  }
+
+  server.broadcast( payload, { channel: socket.channel });
+
+  core.managers.stats.increment('messages-sent');
+};
+
+exports.requiredData = ['text'];
+
+exports.info = {
+  name: 'chat',
+  usage: 'chat {text}',
+  description: 'Broadcasts passed `text` field to the calling users channel'
+};
diff --git a/server/src/commands/core/help.js b/server/src/commands/core/help.js
new file mode 100644
index 0000000..17478d0
--- /dev/null
+++ b/server/src/commands/core/help.js
@@ -0,0 +1,33 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  let reply = `Help usage: { cmd: 'help', type: 'categories'} or { cmd: 'help', type: 'commandname'}`;
+
+  if (typeof data.type === 'undefined') {
+    //
+  } else {
+    if (data.type == 'categories') {
+      let categories = core.commands.categories();
+      // TODO: bad output, fix this
+      reply = `Command Categories:\n${categories}`;
+    } else {
+      // TODO: finish this module later
+    }
+  }
+
+  server.reply({
+    cmd: 'info',
+    text: reply
+  }, socket);
+};
+
+// optional parameters are marked, all others are required
+exports.info = {
+  name: 'help', // actual command name
+  usage: 'help ([type:categories] | [type:command])',
+  description: 'Outputs information about the servers current protocol'
+};
diff --git a/server/src/commands/core/invite.js b/server/src/commands/core/invite.js
new file mode 100644
index 0000000..1c70ac1
--- /dev/null
+++ b/server/src/commands/core/invite.js
@@ -0,0 +1,64 @@
+/*
+
+*/
+
+'use strict';
+
+function verifyNickname(nick) {
+  return /^[a-zA-Z0-9_]{1,24}$/.test(nick);
+}
+
+exports.run = async (core, server, socket, data) => {
+  let targetNick = String(data.nick);
+
+  if (!verifyNickname(targetNick)) {
+    // Not a valid nickname? Chances are we won't find them
+    return;
+  }
+
+  if (targetNick == socket.nick) {
+    // TODO: reply with something witty? They invited themself
+    return;
+  }
+
+  if (server._police.frisk(socket.remoteAddress, 2)) {
+    server.reply({
+      cmd: 'warn',
+      text: 'You are sending invites too fast. Wait a moment before trying again.'
+    }, socket);
+
+    return;
+  }
+
+  let channel = Math.random().toString(36).substr(2, 8);
+
+  let payload = {
+    cmd: 'info',
+    text: `${socket.nick} invited you to ?${channel}`
+  };
+  let inviteSent = server.broadcast( payload, { channel: socket.channel, nick: targetNick });
+
+  if (!inviteSent) {
+    server.reply({
+      cmd: 'warn',
+      text: 'Could not find user in channel'
+    }, socket);
+
+    return;
+  }
+
+  server.reply({
+    cmd: 'info',
+    text: `You invited ${targetNick} to ?${channel}`
+  }, socket);
+
+  core.managers.stats.increment('invites-sent');
+};
+
+exports.requiredData = ['nick'];
+
+exports.info = {
+  name: 'invite',
+  usage: 'invite {nick}',
+  description: 'Generates a unique (more or less) room name and passes it to two clients'
+};
diff --git a/server/src/commands/core/join.js b/server/src/commands/core/join.js
new file mode 100644
index 0000000..6a65851
--- /dev/null
+++ b/server/src/commands/core/join.js
@@ -0,0 +1,128 @@
+/*
+
+*/
+
+'use strict';
+
+const crypto = require('crypto');
+
+function hash(password) {
+  var sha = crypto.createHash('sha256');
+  sha.update(password);
+  return sha.digest('base64').substr(0, 6);
+}
+
+function verifyNickname(nick) {
+  return /^[a-zA-Z0-9_]{1,24}$/.test(nick);
+}
+
+exports.run = async (core, server, socket, data) => {
+  if (server._police.frisk(socket.remoteAddress, 3)) {
+    server.reply({
+      cmd: 'warn',
+      text: 'You are joining channels too fast. Wait a moment and try again.'
+    }, socket);
+
+    return;
+  }
+
+  if (typeof socket.channel !== 'undefined') {
+    // Calling socket already in a channel
+    // TODO: allow changing of channel without reconnection
+    return;
+  }
+
+  let channel = String(data.channel).trim();
+  if (!channel) {
+    // Must join a non-blank channel
+    return;
+  }
+
+  // Process nickname
+  let nick = String(data.nick);
+  let nickArray = nick.split('#', 2);
+  nick = nickArray[0].trim();
+
+  if (!verifyNickname(nick)) {
+    server.reply({
+      cmd: 'warn',
+      text: 'Nickname must consist of up to 24 letters, numbers, and underscores'
+    }, socket);
+
+    return
+  }
+
+  for (let client of server.clients) {
+    if (client.channel === channel) {
+      if (client.nick.toLowerCase() === nick.toLowerCase()) {
+        server.reply({
+          cmd: 'warn',
+          text: 'Nickname taken'
+        }, socket);
+
+        return;
+      }
+    }
+  }
+
+  // TODO: Should we check for mod status first to prevent overwriting of admin status somehow? Meh, w/e, cba.
+  let uType = 'user';
+  let trip = null;
+  let password = nickArray[1];
+  if (nick.toLowerCase() == core.config.adminName.toLowerCase()) {
+    if (password != core.config.adminPass) {
+      server.reply({
+        cmd: 'warn',
+        text: 'Gtfo'
+      }, socket);
+
+      return;
+    } else {
+      uType = 'admin';
+      trip = hash(password + core.config.tripSalt);
+    }
+  } else if (password) {
+    trip = hash(password + core.config.tripSalt);
+  }
+
+  // TODO: Disallow moderator impersonation
+  for (let mod of core.config.mods) {
+    if (trip === mod.trip)
+      uType = 'mod';
+  }
+
+  // Announce the new user
+  server.broadcast({
+    cmd: 'onlineAdd',
+    nick: nick,
+    trip: trip || 'null'
+  }, { channel: channel });
+
+  socket.uType = uType;
+  socket.nick = nick;
+  socket.channel = channel;
+  if (trip !== null) socket.trip = trip;
+
+  // Reply with online user list
+  let nicks = [];
+  for (let client of server.clients) {
+    if (client.channel === channel) {
+      nicks.push(client.nick);
+    }
+  }
+
+  server.reply({
+    cmd: 'onlineSet',
+    nicks: nicks
+  }, socket);
+
+  core.managers.stats.increment('users-joined');
+};
+
+exports.requiredData = ['channel', 'nick'];
+
+exports.info = {
+  name: 'join',
+  usage: 'join {channel} {nick}',
+  description: 'Place calling socket into target channel with target nick & broadcast event to channel'
+};
diff --git a/server/src/commands/core/showcase.js b/server/src/commands/core/showcase.js
new file mode 100644
index 0000000..aaa474c
--- /dev/null
+++ b/server/src/commands/core/showcase.js
@@ -0,0 +1,46 @@
+/*
+
+*/
+
+'use strict';
+
+// you can require() modules here
+
+// this function will only be only in the scope of the module
+const createReply = (echoInput) => {
+  if (echoInput.length > 100)
+    echoInput = 'HOW ABOUT NO?';
+
+  return `You want me to echo: ${echoInput}?`
+};
+
+// `exports.run()` is required and will always be passed (core, server, socket, data)
+// be sure it's asyn too
+exports.run = async (core, server, socket, data) => {
+
+  server.reply({
+    cmd: 'info',
+    text: `SHOWCASE MODULE: ${core.showcase} - ${this.createReply(data.echo)}`
+  }, socket);
+
+};
+
+// `exports.init()` is optional, and will only be run when the module is loaded into memory
+// it will always be passed a reference to the global core class
+// note: this will fire again if a reload is issued, keep that in mind
+exports.init = (core) => {
+  if (typeof core.showcase === 'undefined') {
+    core.showcase = 'init is a handy place to put global data by assigning it to `core`';
+  }
+}
+
+// optional, if `data.echo` is missing `exports.run()` will never be called & the user will be alerted
+exports.requiredData = ['echo'];
+
+// optional parameters are marked, all others are required
+exports.info = {
+  name: 'showcase', // actual command name
+  aliases: ['templateModule'], // optional, an array of other names this module can be executed by
+  usage: 'showcase {echo}', // used for help output
+  description: 'Simple command module template & info' // used for help output
+};
diff --git a/server/src/commands/core/stats.js b/server/src/commands/core/stats.js
new file mode 100644
index 0000000..841675f
--- /dev/null
+++ b/server/src/commands/core/stats.js
@@ -0,0 +1,55 @@
+/*
+
+*/
+
+'use strict';
+
+const stripIndents = require('common-tags').stripIndents;
+
+const formatTime = (time) => {
+  let seconds = time[0] + time[1] / 1e9;
+
+  let minutes = Math.floor(seconds / 60);
+  seconds = seconds % 60;
+
+  let hours = Math.floor(minutes / 60);
+  minutes = minutes % 60;
+  return `${hours.toFixed(0)}h ${minutes.toFixed(0)}m ${seconds.toFixed(0)}s`;
+};
+
+exports.run = async (core, server, socket, data) => {
+  let ips = {};
+  let channels = {};
+  for (let client of server.clients) {
+    if (client.channel) {
+      channels[client.channel] = true;
+      ips[client.remoteAddress] = true;
+    }
+  }
+
+  let uniqueClientCount = Object.keys(ips).length;
+  let uniqueChannels = Object.keys(channels).length;
+
+  ips = null;
+  channels = null;
+
+  server.reply({
+    cmd: 'info',
+    text: stripIndents`current-connections: ${uniqueClientCount}
+                       current-channels: ${uniqueChannels}
+                       users-joined: ${(core.managers.stats.get('users-joined') || 0)}
+                       invites-sent: ${(core.managers.stats.get('invites-sent') || 0)}
+                       messages-sent: ${(core.managers.stats.get('messages-sent') || 0)}
+                       users-banned: ${(core.managers.stats.get('users-banned') || 0)}
+                       stats-requested: ${(core.managers.stats.get('stats-requested') || 0)}
+                       server-uptime: ${formatTime(process.hrtime(core.managers.stats.get('start-time')))}`
+  }, socket);
+
+  core.managers.stats.increment('stats-requested');
+};
+
+exports.info = {
+  name: 'stats',
+  usage: 'stats',
+  description: 'Sends back current server stats to the calling client'
+};
diff --git a/server/src/commands/mod/ban.js b/server/src/commands/mod/ban.js
new file mode 100644
index 0000000..fde1ad8
--- /dev/null
+++ b/server/src/commands/mod/ban.js
@@ -0,0 +1,61 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  if (socket.uType == 'user') {
+    // ignore if not mod or admin
+    return;
+  }
+
+  let targetNick = String(data.nick);
+  let badClient = null;
+  for (let client of server.clients) {
+    // Find badClient's socket
+    if (client.channel == socket.channel && client.nick == targetNick) {
+      badClient = client;
+      break;
+    }
+  }
+
+  if (!badClient) {
+    server.reply({
+      cmd: 'warn',
+      text: 'Could not find user in channel'
+    }, socket);
+
+    return;
+  }
+
+  if (badClient.uType !== 'user') {
+    server.reply({
+      cmd: 'warn',
+      text: 'Cannot ban other mods, how rude'
+    }, socket);
+
+    return;
+  }
+
+  // TODO: ratelimiting here
+  // TODO: add reference to banned users nick or unban by nick cmd
+  //POLICE.arrest(getAddress(badClient))
+  // TODO: add event to log?
+  console.log(`${socket.nick} [${socket.trip}] banned ${targetNick} in ${socket.channel}`);
+  server.broadcast({
+    cmd: 'info',
+    text: `Banned ${targetNick}`
+  }, { channel: socket.channel });
+  badClient.close();
+
+  core.managers.stats.increment('users-banned');
+};
+
+exports.requiredData = ['nick'];
+
+exports.info = {
+  name: 'ban',
+  usage: 'ban {nick}',
+  description: 'Disconnects the target nickname in the same channel as calling socket & adds to ratelimiter'
+};
diff --git a/server/src/commands/mod/kick.js b/server/src/commands/mod/kick.js
new file mode 100644
index 0000000..5cd524d
--- /dev/null
+++ b/server/src/commands/mod/kick.js
@@ -0,0 +1,74 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  if (socket.uType == 'user') {
+    // ignore if not mod or admin
+    return;
+  }
+
+  let targetNick = String(data.nick);
+  let badClient = null;
+  for (let client of server.clients) {
+    // Find badClient's socket
+    if (client.channel == socket.channel && client.nick == targetNick) {
+      badClient = client;
+      break;
+    }
+  }
+
+  if (!badClient) {
+    server.reply({
+      cmd: 'warn',
+      text: 'Could not find user in channel'
+    }, socket);
+
+    return;
+  }
+
+  if (badClient.uType !== 'user') {
+    server.reply({
+      cmd: 'warn',
+      text: 'Cannot kick other mods, how rude'
+    }, socket);
+
+    return;
+  }
+
+  // TODO: add event to log?
+  let newChannel = Math.random().toString(36).substr(2, 8);
+  badClient.channel = newChannel;
+
+  console.log(`${socket.nick} [${socket.trip}] kicked ${targetNick} in ${socket.channel}`);
+
+  // remove socket from same-channel client
+  server.broadcast({
+    cmd: 'onlineRemove',
+    nick: targetNick
+  }, { channel: socket.channel });
+
+  // publicly broadcast event (TODO: should this be supressed?)
+  server.broadcast({
+    cmd: 'info',
+    text: `Kicked ${targetNick}`
+  }, { channel: socket.channel });
+
+  // inform mods with where they were sent
+  server.broadcast({
+    cmd: 'info',
+    text: `${targetNick} was banished to ?${newChannel}`
+  }, { channel: socket.channel, uType: 'mod' });
+
+  core.managers.stats.increment('users-banned');
+};
+
+exports.requiredData = ['nick'];
+
+exports.info = {
+  name: 'kick',
+  usage: 'kick {nick}',
+  description: 'Forces target client into another channel without announcing change'
+};
diff --git a/server/src/commands/mod/unban.js b/server/src/commands/mod/unban.js
new file mode 100644
index 0000000..cc1016a
--- /dev/null
+++ b/server/src/commands/mod/unban.js
@@ -0,0 +1,34 @@
+/*
+
+*/
+
+'use strict';
+
+exports.run = async (core, server, socket, data) => {
+  if (socket.uType == 'user') {
+    // ignore if not mod or admin
+    return;
+  }
+
+  let ip = String(data.ip);
+  let nick = String(data.nick); // for future upgrade
+
+  // TODO: remove ip from ratelimiter
+  // POLICE.pardon(ip)
+  console.log(`${socket.nick} [${socket.trip}] unbanned ${/*nick || */ip} in ${socket.channel}`);
+
+  server.reply({
+    cmd: 'info',
+    text: `Unbanned ${/*nick || */ip}`
+  }, socket);
+
+  core.managers.stats.decrement('users-banned');
+};
+
+exports.requiredData = ['ip'];
+
+exports.info = {
+  name: 'unban',
+  usage: 'unban {ip}',
+  description: 'Removes target ip from the ratelimiter'
+};
diff --git a/server/src/core/rateLimiter.js b/server/src/core/rateLimiter.js
new file mode 100644
index 0000000..0f45239
--- /dev/null
+++ b/server/src/core/rateLimiter.js
@@ -0,0 +1,104 @@
+/**
+  * Tracks frequency of occurances based on `id` (remote address), then allows or
+  * denies command execution based on comparison with `threshold`
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+class Police {
+  /**
+   * Create a ratelimiter instance.
+   */
+  constructor () {
+    this._records = {};
+    this._halflife = 30000; // ms
+    this._threshold = 25;
+  }
+
+  /**
+    * Finds current score by `id`
+    *
+    * @param {String} id target id / address
+    * @public
+    *
+    * @memberof Police
+    */
+  search (id) {
+    let record = this._records[id];
+
+    if (!record) {
+      record = this._records[id] = {
+        time: Date.now(),
+        score: 0
+      }
+    }
+
+    return record;
+  }
+
+  /**
+    * Adjusts the current ratelimit score by `deltaScore`
+    *
+    * @param {String} id target id / address
+    * @param {Number} deltaScore amount to adjust current score by
+    * @public
+    *
+    * @memberof Police
+    */
+  frisk (id, deltaScore) {
+    let record = this.search(id);
+
+    if (record.arrested) {
+      return true;
+    }
+
+    record.score *= Math.pow(2, -(Date.now() - record.time ) / this._halflife);
+    record.score += deltaScore;
+    record.time = Date.now();
+
+    if (record.score >= this._threshold) {
+      return true;
+    }
+
+    return false;
+  }
+
+  /**
+    * Statically set server to no longer accept traffic from `id`
+    *
+    * @param {String} id target id / address
+    * @public
+    *
+    * @memberof Police
+    */
+  arrest (id) {
+    var record = this.search(id);
+
+    if (record) {
+      record.arrested = true;
+    }
+  }
+
+  /**
+    * Remove statically assigned limit from `id`
+    *
+    * @param {String} id target id / address
+    * @public
+    *
+    * @memberof Police
+    */
+  pardon (id) {
+    var record = this.search(id);
+
+    if (record) {
+      record.arrested = false;
+    }
+  }
+}
+
+module.exports = Police;
diff --git a/server/src/core/server.js b/server/src/core/server.js
new file mode 100644
index 0000000..c16aec8
--- /dev/null
+++ b/server/src/core/server.js
@@ -0,0 +1,197 @@
+/**
+  * Main websocket server handling communications and connection events
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+const wsServer = require('ws').Server;
+const Police = require('./rateLimiter');
+
+class server extends wsServer {
+  /**
+   * Create a HackChat server instance.
+   *
+   * @param {Object} core Reference to the core server object
+   */
+  constructor (core) {
+    super({ port: core.config.websocketPort });
+
+    this._core = core;
+    this._police = new Police();
+    this._cmdBlacklist = {};
+
+    this.on('error', (err) => {
+      this.handleError('server', err);
+    });
+
+    this.on('connection', (socket, request) => {
+      this.newConnection(socket, request);
+    });
+  }
+
+  /**
+    * Bind listeners for the new socket created on connection to this class
+    *
+    * @param {Object} socket New socket object
+    * @param {Object} request Initial headers of the new connection
+    */
+  newConnection (socket, request) {
+    socket.remoteAddress = request.headers['x-forwarded-for'] || request.connection.remoteAddress;
+
+  	socket.on('message', ((data) => {
+      this.handleData(socket, data);
+    }).bind(this));
+
+    socket.on('close', (() => {
+      this.handleClose(socket);
+    }).bind(this));
+
+    socket.on('error', ((err) => {
+      this.handleError(socket, err);
+    }).bind(this));
+  }
+
+  /**
+    * Handle incoming messages from clients, parse and check command, then hand-off
+    *
+    * @param {Object} socket Calling socket object
+    * @param {String} data Message sent from client
+    */
+  handleData (socket, data) {
+    // TODO: Rate limit here
+    // Don't penalize yet, but check whether IP is rate-limited
+    if (this._police.frisk(socket.remoteAddress, 0)) {
+      this.reply({ cmd: 'warn', text: "Your IP is being rate-limited or blocked." }, socket);
+
+      return;
+    }
+
+    // Penalize here, but don't do anything about it
+    this._police.frisk(socket.remoteAddress, 1);
+
+    // ignore ridiculously large packets
+    if (data.length > 65536) {
+      return;
+    }
+
+    var args = null;
+    try {
+      args = JSON.parse(data);
+    } catch (e) {
+      // Client sent malformed json, gtfo
+      socket.close();
+    }
+
+    if (args === null)
+      return;
+
+    if (typeof args.cmd === 'undefined' || args.cmd == 'ping')
+      return;
+
+    var cmd = args.cmd;
+
+    if (typeof socket.channel === 'undefined' && cmd !== 'join')
+      return;
+
+    if (typeof this._cmdBlacklist[cmd] === 'function') {
+      return;
+    }
+
+    this._core.commands.handleCommand(this, socket, args);
+  }
+
+  /**
+    * Handle socket close from clients
+    *
+    * @param {Object} socket Closing socket object
+    */
+  handleClose (socket) {
+    try {
+      if (socket.channel) {
+        this.broadcast({
+          cmd: 'onlineRemove',
+          nick: socket.nick
+        }, { channel: socket.channel });
+      }
+    } catch (e) {
+      // TODO: Should this be added to the error log?
+    }
+  }
+
+  /**
+    * "Handle" server or socket errors
+    *
+    * @param {Object||String} socket Calling socket object, or 'server'
+    * @param {String} err The sad stuff
+    */
+  handleError (socket, err) {
+    // Meh, yolo
+    // I mean;
+    // TODO: Should this be added to the error log?
+  }
+
+  /**
+    * Send data payload to specific socket/client
+    *
+    * @param {Object} data Object to convert to json for transmission
+    * @param {Object} socket The target client
+    */
+  send (data, socket) {
+    // Add timestamp to command
+    data.time = Date.now();
+
+    try {
+      if (socket.readyState == 1) { // Who says statically checking port status is bad practice? Everyone? Damnit. #TODO
+        socket.send(JSON.stringify(data));
+      }
+    } catch (e) { }
+  }
+
+  /**
+    * Overload function for `this.send()`
+    *
+    * @param {Object} data Object to convert to json for transmission
+    * @param {Object} socket The target client
+    */
+  reply (data, socket) {
+    this.send(data, socket);
+  }
+
+  /**
+    * Finds sockets/clients that meet the filter requirements, then passes the data to them
+    *
+    * @param {Object} data Object to convert to json for transmission
+    * @param {Object} filter The socket must of equal or greater attribs matching `filter`
+    *                        = {} // matches all
+    *                        = { channel: 'programming' } // matches any socket where (`socket.channel` === 'programming')
+    *                        = { channel: 'programming', nick: 'Marzavec' } // matches any socket where (`socket.channel` === 'programming' && `socket.nick` === 'Marzavec')
+    */
+  broadcast (data, filter) {
+    let filterAttribs = Object.keys(filter);
+    let reqCount = filterAttribs.length;
+    let curMatch;
+    let sent = false;
+    for ( let socket of this.clients ) {
+      curMatch = 0;
+
+      for( let i = 0; i < reqCount; i++ ) {
+        if (typeof socket[filterAttribs[i]] !== 'undefined' && socket[filterAttribs[i]] === filter[filterAttribs[i]])
+          curMatch++;
+      }
+
+      if (curMatch === reqCount) {
+        this.send(data, socket);
+        sent = true;
+      }
+    }
+
+    return sent;
+  }
+}
+
+module.exports = server;
diff --git a/server/src/managers/commands.js b/server/src/managers/commands.js
new file mode 100644
index 0000000..95d0f1b
--- /dev/null
+++ b/server/src/managers/commands.js
@@ -0,0 +1,244 @@
+/**
+  * Commands / protocol manager- loads, validates and handles command execution
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+const path = require('path');
+const chalk = require('chalk');
+const didYouMean = require('didyoumean2');
+
+class CommandManager {
+  /**
+    * Create a `CommandManager` instance for handling commands/protocol
+    *
+    * @param {Object} core reference to the global core object
+    */
+  constructor (core) {
+    this.core = core;
+    this._commands = [];
+    this._categories = [];
+  }
+
+  /**
+    * (Re)initializes name spaces for commands and starts load routine
+    *
+    */
+  loadCommands () {
+    this._commands = [];
+    this._categories = [];
+
+    const core = this.core;
+
+    const commandImports = core.managers.dynamicImports.getImport('src/commands');
+    let cmdErrors = '';
+    Object.keys(commandImports).forEach(file => {
+      let command = commandImports[file];
+      let name = path.basename(file);
+      cmdErrors += this._validateAndLoad(command, file, name);
+    });
+
+    return cmdErrors;
+  }
+
+  /**
+    * Checks the module after having been `require()`ed in and reports errors
+    *
+    * @param {Object} command reference to the newly loaded object
+    * @param {String} file file path to the module
+    * @param {String} name command (`cmd`) name
+    */
+  _validateAndLoad (command, file, name) {
+    let error = this._validateCommand(command);
+
+    if (error) {
+      // TODO: Add to logger?
+      let errText = `Failed to load '${name}': ${error}\n\n`;
+      console.log(errText);
+      return errText;
+    }
+
+    if (!command.category) {
+      let base = path.join(this.core.managers.dynamicImports.base, 'commands');
+
+      let category = 'Uncategorized';
+      if (file.indexOf(path.sep) > -1) {
+        category = path.dirname(path.relative(base, file))
+          .replace(new RegExp(path.sep.replace('\\', '\\\\'), 'g'), '/');
+      }
+
+      command.info.category = category;
+
+      if (this._categories.indexOf(category) === -1)
+        this._categories.push(category);
+    }
+
+    if (typeof command.init === 'function') {
+      try {
+        command.init(this.core);
+      } catch (err) {
+        // TODO: Add to logger?
+        let errText = `Failed to initialize '${name}': ${err}\n\n`;
+        console.log(errText);
+        return errText;
+      }
+    }
+
+    this._commands.push(command);
+
+    return '';
+  }
+
+  /**
+    * Checks the module after having been `require()`ed in and reports errors
+    *
+    * @param {Object} object reference to the newly loaded object
+    */
+  _validateCommand (object) {
+    if (typeof object !== 'object')
+      return 'command setup is invalid';
+
+    if (typeof object.run !== 'function')
+      return 'run function is missing';
+
+    if (typeof object.info !== 'object')
+      return 'info object is missing';
+
+    if (typeof object.info.name !== 'string')
+      return 'info object is missing a valid name field';
+
+    return null;
+  }
+
+  /**
+    * Pulls all command names from a passed `category`
+    *
+    * @param {String} category reference to the newly loaded object
+    */
+  all (category) {
+    return !category ? this._commands : this._commands.filter(c => c.info.category.toLowerCase() === category.toLowerCase());
+  }
+
+  /**
+    * Pulls all category names
+    *
+    */
+  categories () {
+    return this._categories;
+  }
+
+  /**
+    * Pulls command by name or alia(s)
+    *
+    * @param {String} name name or alias of command
+    */
+  get (name) {
+    return this.findBy('name', name)
+      || this._commands.find(command => command.info.aliases instanceof Array && command.info.aliases.indexOf(name) > -1);
+  }
+
+  /**
+    * Pulls command by arbitrary search of the `module.info` attribute
+    *
+    * @param {String} key name or alias of command
+    * @param {String} value name or alias of command
+    */
+  findBy (key, value) {
+    return this._commands.find(c => c.info[key] === value);
+  }
+
+  /**
+    * Finds and executes the requested command, or fails with semi-intelligent error
+    *
+    * @param {Object} server main server reference
+    * @param {Object} socket calling socket reference
+    * @param {Object} data command structure passed by socket (client)
+    */
+  handleCommand (server, socket, data) {
+    // Try to find command first
+    let command = this.get(data.cmd);
+
+    if (command) {
+      return this.execute(command, server, socket, data);
+    } else {
+      // Then fail with helpful (sorta) message
+      return this._handleFail(server, socket, data);
+    }
+  }
+
+  /**
+    * Requested command failure handler, attempts to find command and reports back
+    *
+    * @param {Object} server main server reference
+    * @param {Object} socket calling socket reference
+    * @param {Object} data command structure passed by socket (client)
+    */
+  _handleFail(server, socket, data) {
+    const maybe = didYouMean(data.cmd, this.all().map(c => c.info.name), {
+      threshold: 5,
+      thresholdType: 'edit-distance'
+    });
+
+    if (maybe) {
+      // Found a suggestion, pass it on to their dyslexic self
+      return server.reply({
+        cmd: 'warn',
+        text: `Command not found, did you mean: \`${maybe}\`?`
+      }, socket);
+    }
+
+    // Request so mangled that I don't even, silently fail
+    return;
+  }
+
+  /**
+    * Attempt to execute the requested command, fail if err or bad params
+    *
+    * @param {Object} command target command module
+    * @param {Object} server main server reference
+    * @param {Object} socket calling socket reference
+    * @param {Object} data command structure passed by socket (client)
+    */
+  async execute(command, server, socket, data) {
+    if (typeof command.requiredData !== 'undefined') {
+      let missing = [];
+      for (let i = 0, len = command.requiredData.length; i < len; i++) {
+        if (typeof data[command.requiredData[i]] === 'undefined')
+          missing.push(command.requiredData[i]);
+      }
+
+      if (missing.length > 0) {
+        let errText = `Failed to execute '${command.info.name}': missing required ${missing.join(', ')}\n\n`;
+
+        server.reply({
+          cmd: 'warn',
+          text: errText
+        }, socket);
+
+        return null;
+      }
+    }
+
+    try {
+      return await command.run(this.core, server, socket, data);
+    } catch (err) {
+      // TODO: Add to logger?
+      let errText = `Failed to execute '${command.info.name}': ${err}\n\n`;
+      console.log(errText);
+
+      server.reply({
+        cmd: 'warn',
+        text: errText
+      }, socket);
+
+      return null;
+    }
+  }
+}
+
+module.exports = CommandManager;
diff --git a/server/src/managers/config.js b/server/src/managers/config.js
new file mode 100644
index 0000000..2ff4a88
--- /dev/null
+++ b/server/src/managers/config.js
@@ -0,0 +1,228 @@
+/**
+  * Server configuration manager, handling loading, creation, parsing and saving
+  * of the main config.json file
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+const stripIndents = require('common-tags').stripIndents;
+const dateFormat = require('dateformat');
+const chalk = require('chalk');
+const fse = require('fs-extra');
+const prompt = require('prompt');
+const path = require('path');
+const deSync = require('deasync');
+
+class ConfigManager {
+  /**
+    * Create a `ConfigManager` instance for (re)loading classes and config
+    *
+    * @param {Object} core reference to the global core object
+    * @param {String} base executing directory name; __dirname
+    * @param {Object} dynamicImports dynamic import engine reference
+    */
+  constructor (core, base, dynamicImports) {
+    this._core = core;
+    this._base = base;
+
+    this._configPath = path.resolve(base, 'config/config.json');
+
+    this._dynamicImports = dynamicImports;
+  }
+
+  /**
+    * Pulls both core config questions along with any optional config questions,
+    * used in building the initial config.json or re-building it.
+    *
+    * @param {Object} currentConfig an object containing current server settings, if any
+    * @param {Object} optionalConfigs optional (non-core) module config
+    */
+  getQuestions (currentConfig, optionalConfigs) {
+    // core server setup questions
+    const questions = {
+      properties: {
+        adminName: {
+          pattern: /^"?[a-zA-Z0-9_]+"?$/,
+          type: 'string',
+          message: 'Nicks can only contain letters, numbers and underscores',
+          required: !currentConfig.adminName,
+          default: currentConfig.adminName,
+          before: value => value.replace(/"/g, '')
+        },
+        adminPass: {
+          type: 'string',
+          required: !currentConfig.adminPass,
+          default: currentConfig.adminPass,
+          hidden: true,
+          replace: '*',
+        },
+        websocketPort: {
+          type: 'number',
+          required: !currentConfig.websocketPort,
+          default: currentConfig.websocketPort || 6060
+        },
+        tripSalt: {
+          type: 'string',
+          required: !currentConfig.tripSalt,
+          default: currentConfig.tripSalt,
+          hidden: true,
+          replace: '*',
+        }
+      }
+    };
+
+    // non-core server setup questions, for future plugin support
+    Object.keys(optionalConfigs).forEach(configName => {
+      const config = optionalConfigs[configName];
+      const question = config.getQuestion(currentConfig, configName);
+
+      if (!question) {
+        return;
+      }
+
+      question.description = (question.description || configName) + ' (Optional)';
+      questions.properties[configName] = question;
+    });
+
+    return questions;
+  }
+
+  /**
+    * `load` function overload, only blocking
+    *
+    */
+  loadSync () {
+    let conf = {};
+    conf = this.load();
+
+    // trip salt is the last core config question, wait until it's been populated
+    // TODO: update this to work with new plugin support
+    while(conf === null || typeof conf.tripSalt === 'undefined') {
+      deSync.sleep(100);
+    }
+
+    return conf;
+  }
+
+  /**
+    * (Re)builds the config.json (main server config), or loads the config into mem
+    * if rebuilding, process will exit- this is to allow a process manager to take over
+    *
+    * @param {Boolean} reconfiguring set to true by `scripts/configure.js`, will exit if true
+    */
+  load (reconfiguring = false) {
+    if (reconfiguring || !fse.existsSync(this._configPath)) {
+      // gotta have that sexy console
+      console.log(stripIndents`
+        ${chalk.magenta('°º¤ø,¸¸,ø¤º°`°º¤ø,¸,ø¤°º¤ø,¸¸,ø¤º°`°º¤ø,¸°º¤ø,¸¸,ø¤º°`°º¤ø')}
+        ${chalk.gray('--------------(') + chalk.white(' HackChat Setup Wizard v1.0 ') + chalk.gray(')--------------')}
+        ${chalk.magenta('°º¤ø,¸¸,ø¤º°`°º¤ø,¸,ø¤°º¤ø,¸¸,ø¤º°`°º¤ø,¸°º¤ø,¸¸,ø¤º°`°º¤ø')}
+
+        For advanced setup, see the HackChat wiki at:
+        ${chalk.green('https://github.com/')}
+
+        ${chalk.white('Note:')} ${chalk.green('npm/yarn run config')} will re-run this utility.
+
+        You will now be asked for the following:
+        -     ${chalk.magenta('Admin Name')}, the initial admin username
+        -     ${chalk.magenta('Admin Pass')}, the initial admin password
+        -     ${chalk.magenta('      Port')}, the port for the websocket
+        -     ${chalk.magenta('      Salt')}, the salt for username trip
+        \u200b
+      `);
+
+      let currentConfig = this._config || {};
+      if (reconfiguring && fse.existsSync(this._configPath)) {
+        this._backup();
+        currentConfig = fse.readJSONSync(this._configPath);
+      }
+
+      prompt.get(this.getQuestions(currentConfig, this._dynamicImports.optionalConfigs), (err, res) => {
+        if (typeof res.mods === 'undefined') {
+          res.mods = [];
+        }
+
+        if (err) {
+          console.error(err);
+          process.exit(666); // SPOOKY!
+        }
+
+        try {
+          fse.outputJsonSync(this._configPath, res);
+        } catch (e) {
+          console.error(`Couldn't write config to ${this._configPath}\n${e.stack}`);
+          if (!reconfiguring) {
+            process.exit(666); // SPOOKY!
+          }
+        }
+
+        console.log('Config generated! You may now start the server normally.')
+
+        process.exit(reconfiguring ? 0 : 42);
+      });
+
+      return null;
+    }
+
+    this._config = fse.readJSONSync(this._configPath);
+
+    return this._config;
+  }
+
+  /**
+    * Creates backup of current config into _configPath
+    *
+    */
+  _backup () {
+    const backupPath = `${this._configPath}.${dateFormat('dd-mm-yy-HH-MM-ss')}.bak`;
+    fse.copySync(this._configPath, backupPath);
+
+    return backupPath;
+  }
+
+  /**
+    * First makes a backup of the current `config.json`, then writes current config
+    * to disk
+    *
+    */
+  save () {
+    const backupPath = this._backup();
+
+    if (!fse.existsSync(this._configPath)){
+      fse.mkdirSync(this._configPath);
+    }
+
+    try {
+      fse.writeJSONSync(this._configPath, this._config);
+      fse.removeSync(backupPath);
+
+      return true;
+    } catch (e) {
+      // TODO: restore backup
+      // TODO: output to logging engine?
+      console.log('Failed to save config file!');
+
+      return false;
+    }
+  }
+
+  /**
+    * Updates current config[`key`] with `value` then writes changes to disk
+    *
+    * @param {*} key arbitrary configuration key
+    * @param {*} value new value to change `key` to
+    */
+  set (key, value) {
+    const realKey = `${key}`;
+    this._config[realKey] = value;
+
+    this.save();
+  }
+}
+
+module.exports = ConfigManager;
diff --git a/server/src/managers/imports-manager.js b/server/src/managers/imports-manager.js
new file mode 100644
index 0000000..f4096b7
--- /dev/null
+++ b/server/src/managers/imports-manager.js
@@ -0,0 +1,150 @@
+/**
+  * Import managment base, used to load commands/protocol and configuration objects
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+const read = require('readdir-recursive');
+const path = require('path');
+
+class ImportsManager {
+  /**
+    * Create a `ImportsManager` instance for (re)loading classes and config
+    *
+    * @param {Object} core reference to the global core object
+    * @param {String} base executing directory name; __dirname
+    */
+  constructor (core, base) {
+    this._core = core;
+    this._base = base;
+
+    this._imports = {};
+    this._optionalConfigs = {};
+  }
+
+  /**
+    * Pull core reference
+    *
+    * @type {Object} readonly
+    */
+  get core () {
+    return this._core;
+  }
+
+  /**
+    * Pull base path that all imports are required in from
+    *
+    * @type {String} readonly
+    */
+  get base () {
+    return this._base;
+  }
+
+  /**
+    * Pull optional (none-core) config options
+    *
+    * @type {Object}
+    */
+  get optionalConfigs () {
+    return Object.assign({}, this._optionalConfigs);
+  }
+
+  /**
+    * Initialize this class and start loading target directories
+    *
+    */
+  init () {
+    let errorText = '';
+    ImportsManager.load_dirs.forEach(dir => {
+      errorText += this.loadDir(dir);
+    });
+
+    return errorText;
+  }
+
+  /**
+    * Gather all js files from target directory, then verify and load
+    *
+    * @param {String} dirName The name of the dir to load, relative to the _base path.
+    */
+  loadDir (dirName) {
+    const dir = path.resolve(this._base, dirName);
+
+    let errorText = '';
+    try {
+      read.fileSync(dir).forEach(file => {
+        const basename = path.basename(file);
+        if (basename.startsWith('_') || !basename.endsWith('.js')) return;
+
+        let imported;
+        try {
+          imported = require(file);
+        } catch (e) {
+          let err = `Unable to load modules from ${dirName} (${path.relative(dir, file)})\n${e}`;
+          errorText += err;
+          console.error(err);
+          return errorText;
+        }
+
+        if (imported.configs) {
+          imported.configs.forEach(config => {
+            this._optionalConfigs[config.name] = config;
+          });
+        }
+
+        if (!this._imports[dirName]) {
+          this._imports[dirName] = {};
+        }
+
+        this._imports[dirName][file] = imported;
+      });
+    } catch (e) {
+      let err = `Unable to load modules from ${dirName}\n${e}`;
+      errorText += err;
+      console.error(err);
+      return errorText;
+    }
+
+    return errorText;
+  }
+
+  /**
+    * Unlink references to each loaded module, pray to google that gc knows it's job,
+    * then reinitialize this class to start the reload
+    *
+    * @param {String} dirName The name of the dir to load, relative to the _base path.
+    */
+  reloadDirCache (dirName) {
+    Object.keys(this._imports[dirName]).forEach((mod) => {
+      delete require.cache[require.resolve(mod)];
+    });
+
+    return this.init();
+  }
+
+  /**
+    * Pull reference to imported modules that were imported from dirName, or
+    * load required directory if not found
+    *
+    * @param {String} dirName The name of the dir to load, relative to the _base path.
+    */
+  getImport (dirName) {
+    let imported = this._imports[dirName];
+
+    if (!imported) {
+      this.loadDir(dirName);
+    }
+
+    return Object.assign({}, this._imports[dirName]);
+  }
+}
+
+// automagically loaded directorys on instantiation
+ImportsManager.load_dirs = ['src/commands'];
+
+module.exports = ImportsManager;
diff --git a/server/src/managers/index.js b/server/src/managers/index.js
new file mode 100644
index 0000000..2fac8fb
--- /dev/null
+++ b/server/src/managers/index.js
@@ -0,0 +1,6 @@
+module.exports = {
+    CommandManager: require('./commands'),
+    Config: require('./config'),
+    ImportsManager: require('./imports-manager'),
+    Stats: require('./stats')
+};
diff --git a/server/src/managers/stats.js b/server/src/managers/stats.js
new file mode 100644
index 0000000..c3b6f9f
--- /dev/null
+++ b/server/src/managers/stats.js
@@ -0,0 +1,61 @@
+/**
+  * Simple generic stats collection script for events occurances (etc)
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+class Stats {
+  /**
+    * Create a stats instance.
+    *
+    */
+  constructor () {
+    this._stats = {};
+  }
+
+  /**
+    * Retrieve value of arbitrary `key` reference
+    *
+    * @param {String} key Reference to the arbitrary store name
+    */
+  get (key) {
+    return this._stats[key];
+  }
+
+  /**
+    * Set value of arbitrary `key` reference
+    *
+    * @param {String} key Reference to the arbitrary store name
+    * @param {Number} value New value for `key`
+    */
+  set (key, value) {
+    this._stats[key] = value;
+  }
+
+  /**
+    * Increase value of arbitrary `key` reference, by 1 or `amount`
+    *
+    * @param {String} key Reference to the arbitrary store name
+    * @param {Number} amount Value to increase `key` by, or 1 if omitted
+    */
+  increment (key, amount) {
+    this.set(key, (this.get(key) || 0) + (amount || 1));
+  }
+
+  /**
+    * Reduce value of arbitrary `key` reference, by 1 or `amount`
+    *
+    * @param {String} key Reference to the arbitrary store name
+    * @param {Number} amount Value to decrease `key` by, or 1 if omitted
+    */
+  decrement (key, amount) {
+    this.set(key, (this.get(key) || 0) - (amount || 1));
+  }
+}
+
+module.exports = Stats;
diff --git a/server/src/scripts/configure.js b/server/src/scripts/configure.js
new file mode 100644
index 0000000..0ecd858
--- /dev/null
+++ b/server/src/scripts/configure.js
@@ -0,0 +1,23 @@
+/**
+  * Server configuration script, used reconfiguring server options
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+// import required classes
+const path = require('path');
+const ImportsManager = require('../managers/imports-manager');
+const ConfigManager = require('../managers/config');
+
+// import and initialize configManager & dependencies
+const importManager = new ImportsManager(null, path.join(__dirname, '../..'));
+importManager.init();
+const configManager = new ConfigManager(null, path.join(__dirname, '../..'), importManager);
+
+// execute config load with `reconfiguring` flag set to true
+configManager.load(true);
diff --git a/server/src/scripts/debug.js b/server/src/scripts/debug.js
new file mode 100644
index 0000000..3a97d9f
--- /dev/null
+++ b/server/src/scripts/debug.js
@@ -0,0 +1,18 @@
+/**
+  * Server debug test script
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+// import required classes
+const path = require('path');
+const ConfigManager = require('../managers/config');
+
+// begin tests
+// TODO: TODO
+// TODO
diff --git a/server/src/scripts/dev.js b/server/src/scripts/dev.js
new file mode 100644
index 0000000..5049b84
--- /dev/null
+++ b/server/src/scripts/dev.js
@@ -0,0 +1,17 @@
+/**
+  * Server development script
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+
+'use strict';
+
+// import required classes
+
+
+// begin tests
+// TODO: TODO
+// TODO