%% 
%%  Ein Beispiel der DANTE-Edition
%% 
%% 
%%  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{166.324pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pstricks}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}[showgrid](3,3)
  \pscustom{ \code{newpath}
    \dim{0cm}\dim{-2cm} \dim{2cm}\dim{0cm}
    \dim{0cm}\dim{2cm}  \dim{0.5cm}\dim{0.5cm}
    \code{ moveto rlineto rlineto rlineto closepath
           2 setlinejoin 7.5 setlinewidth
           stroke}}
\end{pspicture}
\end{document}