Am 25.05.2011 um 22:08 schrieb Mathieu DUPONT:

It bugs on the \leftskip command.
Any idea why ?

I forgot that \listparameter can’t handle arguments in braces
(e.g. \listparameter{before}), this is a real limitation and i hope
Hans is going to change this.

\unprotect
\define[3]\ChapterList
  {\par
   \listparameter\c!before
   \leftskip\listparameter\c!margin
   \noindent\currentlistsymbol\crlf#2\enspace\listdots\enspace#3\par
   \listparameter\c!after}
\protect

Wolfgang