%% 
%%  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{352.81416pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pst-node}
\StopShownPreambleCommands
\begin{document}
\rnode{A}{\psframebox{\large\textbf{Anfang}}} vom
  \rnode{B}{\psframebox{\large\textbf{Ende}}
\ncloop[angleA=180,loopsize=0.9,arm=0.5,linearc=.2]{->}{A}{B}}
\ncput[npos=1.5,nrot=:U]{\psline{|<->|}(.45,-.2)(-.45,-.2)}
\nbput[npos=1.5,nrot=:D,labelsep=.35cm]{\small\texttt{loopsize}}
\ncloop[angleA=10,angleB=180,linecolor=cyan,linearc=.2]{->}{B}{A}
\end{document}