1.1 --- a/doc-src/mathsing.sty	Mon Jul 11 13:15:05 1994 +0200
     1.2 +++ b/doc-src/mathsing.sty	Mon Jul 11 16:29:21 1994 +0200
     1.3 @@ -539,8 +539,10 @@
     1.4  \def\endlisting{\endtrivlist\baselineskip=\oldbaselineskip}
     1.5  
     1.6  %Add ttbox to Springer's macros!!  - LCP
     1.7 +%now redefines \{ and \}
     1.8  \newenvironment{ttbox}{\par\nobreak\vskip-2pt%
     1.9 -           \vbox\bgroup\begin{listing}\leftskip\leftmargini}%
    1.10 +           \vbox\bgroup\begin{listing}\chardef\{=`\{\chardef\}=`\}%
    1.11 +                      \leftskip\leftmargini}%
    1.12          {\end{listing}\egroup\vskip-7pt\@endparenv}
    1.13  \newcommand\ttbreak{\end{ttbox}\goodbreak\vskip-8pt plus 3pt\begin{ttbox}}
    1.14