%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 15-04-22 auf Seite 280.
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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{169.16928pt}
%StartShownPreambleCommands
\usepackage{pst-node}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}(0.5,0)(4,3)  \large
  \psset{nodesep=3pt,linearc=0.3,boxsize=2mm}
  \rput(3,3){\rnode{A}{1}}
  \rput(1,1){\rnode{B}{2}}
  \ncarcbox[arcangle=60]{A}{B}
  \ncarcbox[arcangle=-60,linecolor=lightgray]{A}{B}
  \ncarcbox[arcangle=-60,linecolor=blue]{B}{A}
\end{pspicture}
\end{document}
