3 files changed, 5 insertions, 1 deletions
diff --git a/buch/common/macros.tex b/buch/common/macros.tex
index 7c82180..bb6e9b0 100644
--- a/buch/common/macros.tex
+++ b/buch/common/macros.tex
@@ -23,7 +23,9 @@
 \vfill\pagebreak}
 \newenvironment{teilaufgaben}{
 \begin{enumerate}
-\renewcommand{\labelenumi}{\alph{enumi})}
+\renewcommand{\theenumi}{\alph{enumi})}
+%\renewcommand{\labelenumi}{\alph{enumi})}
+\renewcommand{\labelenumi}{\theenumi}
 }{\end{enumerate}}
 % Aufgabe
 \newcounter{problemcounter}[chapter]
diff --git a/buch/common/test-common.tex b/buch/common/test-common.tex
index 289e59c..3f49701 100644
--- a/buch/common/test-common.tex
+++ b/buch/common/test-common.tex
@@ -30,6 +30,7 @@
 \usepackage{standalone}
 \usepackage{environ}
 \usepackage{tikz}
+\usepackage{xr}
 \input{../common/linsys.tex}
 \newcounter{beispiel}
 \newenvironment{beispiele}{
diff --git a/buch/common/test3.tex b/buch/common/test3.tex
index 8b24262..22d6b63 100644
--- a/buch/common/test3.tex
+++ b/buch/common/test3.tex
@@ -4,6 +4,7 @@
 % (c) 2021 Prof. Dr. Andreas Mueller, OST
 %
 \input{common/test-common.tex}
+\externaldocument{buch}
 
 \begin{document}
 {\parindent0pt\hbox to\hsize{%