%%
%% A DANTE-Edition example
%%
%% Example 36-00-98 on page 810.
%%
%% 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{201.70511pt}
\setlength\parindent{0pt}
\usepackage{pstricks,pst-node,pst-tree,calc}
\definecolor{darkyellow}{rgb}{1, 0.9, 0}
\newcommand\cbox[1]{\colorbox{darkyellow}{#1}}
\newcommand*\pbox[2]{\parbox[t]{\widthof{#1}}{\footnotesize #2}}
\begin{document}
\begin{psmatrix}[rowsep=0pt,colsep=0pt]
\verb+if (+ &[name=rn24a] \cbox{Condition}
& \verb+) {+ &[name=rn25a] \cbox{Command block 1}
& \verb+} else {+ &[name=rn26a] \cbox{Command block 2} & \verb+}+\\[0.75cm]
&[name=rn24e] \pbox{( Condition )}{The condition must be true or false}
&&[name=rn25e] \pbox{\{ Command block 1 \}}{%
This command is executed if the condition
is $\neq0$, which means true.}
&&[name=rn26e]\pbox{\{ Anweisungsblock 2 \}}{%
This command is executed if the condition
is $=0$, which means false.}
\end{psmatrix}
\nccurve[angleA=-90,angleB=90]{->}{rn24a}{rn24e}
\nccurve[angleA=-90,angleB=90]{->}{rn25a}{rn25e}
\nccurve[angleA=-90,angleB=90]{->}{rn26a}{rn26e}
\end{document}
