%%
%% A DANTE-Edition example
%%
%% Example 16-06-5 on page 255.
%%
%% 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{153.70511pt}
\setlength\parindent{0pt}
\usepackage{pstricks,pst-node}
\begin{document}
$\arraycolsep=1.1cm
\begin{array}{@{}cc@{}}
\Rnode{a}{(X-A)} & \Rnode{b}{A} \\[1.5cm]
\Rnode{c}{x} & \Rnode{d}{\tilde{X}}
\end{array}
\psset{nodesep=5pt,arrows=->}
\everypsbox{\scriptstyle}
\ncline{a}{c} \tlput{r}
\ncline{a}{b} \taput{u}
\ncline[linestyle=dashed]{c}{d} \tbput{b}
\ncline{b}{d} \trput{s}$
\end{document}
