\documentclass{article}
\usepackage{msc}
\begin{document}
\begin{msc}%
{Example 1}
\declinst{i}{$i$}{}
\declinst{j}{$j$}{}
\nextlevel
\mess{a}{i}{j}
\nextlevel[2]
\mess{b}{j}{i}
\nextlevel
\end{msc}
\end{document}Fehlercode:
) (msc: 'Example 1'
! Undefined control sequence.
<recently read> \c@lor@to@ps
l.8 \declinst{i}{$i$}{}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
! Undefined control sequence.
\XC@usec@lor ...string \color@ #1#2\endcsname \@@
\fi \space

