%% %% The LaTeX Graphics Companion, 2ed (first printing May 2007) %% %% Example 6-2-37 on page 351. %% %% Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss %% %% 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. %% \documentclass{ttctexa} \pagestyle{empty} \setcounter{page}{6} \setlength\textwidth{135.83385pt} \StartShownPreambleCommands \usepackage{pstricks,pst-node} \StopShownPreambleCommands \begin{document} \begin{pspicture}(2,2)\psgrid[subgriddiv=2] \cnode(0.25,1.75){0.25cm}{A} \cnode(1.75,0.25){0.25cm}{B} \cnode(1.75,1.75){0.25cm}{C} \cnode(0.25,0.25){0.25cm}{D} \ncline[nodesep=0.25]{<->}{A}{B} \ncline[Ynodesep=0.25]{<->}{C}{D} \end{pspicture} \end{document}