%%
%% A DANTE-Edition example
%%
%% Example 16-04-25 on page 251.
%%
%% 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{177.70511pt}
\setlength\parindent{0pt}
\usepackage{pstricks,pst-node}
\begin{document}
\begin{pspicture}(3,3)\large\bfseries
\psset{nodesep=3pt,linearc=0.3}
\rput[bl](0,0){\rnode{A}{1}}
\rput[tr](3,3){\rnode{B}{2}}
\ncbox{A}{B}\rput[lt](0,3){\rnode{A}{3}}
\rput[rb](3,0){\rnode{B}{4}}
\ncbox*[border=4pt,
linecolor=lightgray]{->}{A}{B}
\rput[lt](0,3){\rnode{A}{3}}
\rput[rb](3,0){\rnode{B}{4}}
\end{pspicture}
\end{document}
