%%
%% Ein Beispiel der DANTE-Edition
%%
%% 7. Auflage
%%
%% Beispiel 15-09-5 auf Seite 289.
%%
%% 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}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-node}
%StopShownPreambleCommands
\begin{document}
$ \psmatrix[colsep=1cm,mcol=c]
[name=A,mcol=r] A & [name=X] XxXxX \\[0pt]
[name=Y] YyYyY & [name=Z] Z
\endpsmatrix
\psset{nodesep=3pt,arrows=->}
\ncline{X}{Y} \ncline{X}{Z} \ncline{A}{Y}
\ncline[linestyle=dotted]{Y}{Z} $
\end{document}