%% 
%%  An UIT Edition example
%% 
%%  Example 11-01-2 on page 227.
%% 
%%  Copyright (C) 2010 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{177.70511pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands

\StopShownPreambleCommands
\begin{document}
\fontencoding{OT1}\fontfamily{cmr}\selectfont
(a)\ $a-\mathrm{a}-\mathsf{a}-\mathit{a}-a$
   (\textit{a})(\textsl{a})
\end{document}