%% 
%%  Example 01-10-1 
%%  Copyright (C) 2017 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{328.62788pt}
\usepackage[T1]{fontenc}
%StartShownPreambleCommands
\def\cs#1{{\ttfamily\textbackslash#1}}
%StopShownPreambleCommands
\begin{document}
\cs{bf}  ${\bf {\bf test}}$ | \cs{cal} ${\cal TEST}$ | \cs{it} ${\it test}$
\cs{rm}  ${\rm test}$       | \cs{tt}  ${\tt test}$
\end{document}
