%% 
%%  A DANTE-Edition example
%% 
%%  Example 36-00-53 on page 789.
%% 
%%  Copyright (C) 2011 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[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}

\usepackage{pstricks-add}
\SpecialCoor

\begin{document}
\begin{pspicture}(10,6.5)
  \psset{linewidth=1mm,radius=0.5}
  \Cnode(4,3){A}
  \Cnode(6,2){B}
  \Cnode(4,6){C}
  \Cnode(3,0){D}
  \SpecialCoor
  \psline[linestyle=dashed,linewidth=0.1pt](A)(B)(C)(D)(B)
  \psline[linestyle=dashed,linewidth=0.1pt](C)(A)(D)
  \psline[linestyle=dashed,linewidth=0.1pt](0,2)(10,2)
  \psline[linestyle=dashed,linewidth=0.1pt](0,3)(10,3)
  \psline[linestyle=dashed,linewidth=0.1pt](0,5)(10,0)
  \psline(A)(B)
  \psline[linecolor=red](C)([Xnodesep=4]A)
  \psline[linecolor=green](C)([nodesep=4]A)
  \psline[linecolor=cyan](C)([Xnodesep=3]{A}B)
  \psline[linecolor=blue](C)([Ynodesep=3]{A}B)
  \psline[linecolor=magenta](C)([Ynodesep=3]{B}A)
  \psline[linecolor=yellow](C)([Xnodesep=3]{B}A)
  \psline{->}([Xnodesep=4]{A}B)([Ynodesep=5]{D}C)
\end{pspicture}
\end{document}