%%
%% A DANTE-Edition example
%%
%% Example C-03-2 on page 850.
%%
%% Copyright (C) 2010 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{201.70511pt}
\setlength\parindent{0pt}
\usepackage{pst-node}\SpecialCoor
\begin{document}
\begin{pspicture}(3,-3)
\newcommand{\correct}{%
\pnode(0,0){A} \pnode(2,0){B} %
\psline[linestyle=dashed](A)(B)}
\pcline[linewidth=2pt](0,0)(3,-3)
\naput{\correct}\nbput{correct}% correct
\renewcommand{\correct}{%
\pnode(0,0){A} \pnode(2,0){B}%
\ncline[linestyle=dashed]{A}{B}}\hfill
\pcline[linewidth=2pt](0,0)(3,-3)
\naput{\correct}\nbput{wrong}% wrong
\end{pspicture}
\end{document}
