%% 
%%  Ein Beispiel der DANTE-Edition
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%%  2. Auflage
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%%  Beispiel 09-07-57 auf Seite 441.
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%%  Copyright (C) 2016 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
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{97.16928pt}
\AtBeginDocument{\setlength\parindent{0pt}}
%StartShownPreambleCommands
\usepackage{amsmath}
\newcommand*\CMD[1]{\makebox[4em][l]{%
  \normalsize\texttt{\textbackslash#1}}}
%StopShownPreambleCommands
\begin{document}
\sffamily\Large
\CMD{mbox} $A^{\mbox{text}}_{\mbox{text}}$\\
\CMD{text} $A^{\text{text}}_{\text{text}}$\\
\CMD{textnormal} $A^{\textnormal{text}}_{\textnormal{text}}$\\
\CMD{mathrm} $A^{\mathrm{text}}_{\mathrm{text}}$
\end{document}
