%% 
%%  Ein Beispiel der DANTE-Edition
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%%  7. Auflage
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%%  Beispiel 04-01-12 auf Seite 51.
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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{193.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pstricks}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}[showgrid](4,4)%
  \psline[linestyle=dashed](0,4)
  \psline[linestyle=dashed](4,0)(4,4)
  \psset{linewidth=5mm}
  \psline[arrows=C-C](0,3.75)(4,3.75)
  \psline[linecap=2](0,3)(4,3)
  \psline[arrows=c-c](0,2.25)(4,2.25)
  \psline[linecap=1](0,1.5)(4,1.5)
  \psline[arrows=-](0,0.75)(4,0.75)
  \psline(4,0)
\end{pspicture}
\end{document}