%% 
%%  Ein Beispiel der DANTE-Edition
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%%  7. Auflage
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%%  Beispiel 11-03-5 auf Seite 142.
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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](3,3)
  \pscustom[linewidth=1.5pt]{%
    \psline(1,3)\psline[liftpen=1](2,0)
    \pscurve[liftpen=1](2,0)(2.5,2)(3,0)
    \psline(1,1)(1,0)}
  \psline[linestyle=dashed](1,3)(2,0)
\end{pspicture}
\end{document}