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diff --git a/info/examples/Math/10-10-5.ltx b/info/examples/Math/10-10-5.ltx
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-%% 
-%%  Ein Beispiel der DANTE-Edition
-%%  Mathematiksatz mit LaTeX
-%%  2. Auflage
-%% 
-%%  Beispiel 10-10-5 auf Seite 240.
-%% 
-%%  Copyright (C) 2012 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{352.81416pt}
-\AtBeginDocument{\setlength\parindent{0pt}}
-\StartShownPreambleCommands
-\usepackage{amsmath,amssymb}
-\makeatletter
-\def\underbraceMatrix{\@ifnextchar[{\underbraceM@i}{\underbraceM@i[4pt]}}
-\def\underbraceM@i[#1]#2{\underbraceM@ii{#2}{#1}}%
-\def\underbraceM@ii#1#2{\mathop{\vtop{\m@th\ialign{##\crcr
-   $\hfil\displaystyle{#1}\hfil$\crcr
-   \noalign{\kern3\p@\nointerlineskip}%
-   \kern#2\upbracefill\kern#2\crcr\noalign{\kern3\p@}}}}\limits}
-\makeatother
-\StopShownPreambleCommands
-\begin{document}
-\[
-\underbrace{%
- \left(\begin{array}{cc}
-    A_{\cal E E} & A_{\cal E I}\\ A_{\cal I E} & A_{\cal I I}
- \end{array}\right)}_{\textstyle=A}
-%
-\underbraceMatrix{%
- \left(\begin{array}{cc}
-    A_{\cal E E} & A_{\cal E I}\\ A_{\cal I E} & A_{\cal I I}
- \end{array}\right)}_{\textstyle=A}
-%
-\underbraceMatrix[1em]{%
- \left(\begin{array}{cc}
-    A_{\cal E E} & A_{\cal E I}\\ A_{\cal I E} & A_{\cal I I}
- \end{array}\right)}_{\textstyle=A}
-\]
-\end{document}