%% 
%%  A DANTE-Edition example
%% 
%%  Example 17-00-2 on page 266.
%% 
%%  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{pst-tree}

\begin{document}
psTree\rule{1em}{0.5pt}%
\psset{showbbox=true}%
\begin{psTree}[radius=3pt]{\Toval{root}}
   \TC\TC\TC
\end{psTree}%
\rule{1em}{0.5pt}psTree
\end{document}