%%
%% Ein Beispiel der DANTE-Edition
%%
%% 7. Auflage
%%
%% Beispiel 15-04-1 auf Seite 272.
%%
%% 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
%%
%%
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{145.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-node}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}[showgrid](3,3)
\rput[bl](0,0){\rnode{A}{Idea 1}}
\rput[tr](3,3){\rnode{B}{Idea 2}}
\ncline[nodesep=3pt,doubleline=true]{<->}{A}{B}
\rput[lt](0,3){\rnode{A}{Idea 3}}
\rput[rb](3,0){\rnode{B}{Idea 4}}
\ncline*[nodesep=3pt,doubleline=true]{<->}{A}{B}
\end{pspicture}
\end{document}
