\def\uncatcodespecials{\def\do##1{\catcode`##1=12 }\dospecials\catcode`\@=12}
\def\setupverbatim{\parindent=0pt
\tt \def\par{\leavevmode\endgraf}%
\catcode`\`=\active
\obeylines \uncatcodespecials \obeyspaces}%
{\catcode`\`=\active \gdef`{\relax\lq}}%
\catcode`\|=0
{\obeyspaces\global\let =\ }%
%\bgroup\setupverbatim    |egroup
\def\?#1/{\bgroup\tt\char"5C{#1}\egroup}
\xdef\lb{\string{}
\xdef\rb{\string}}
