%% 
%%  Ein Beispiel der DANTE-Edition
%% 
%% 
%%  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[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{166.324pt}
\setlength\parindent{0pt}
\AtBeginDocument{\Large}
\StartShownPreambleCommands
\usepackage{pst-tree}
\StopShownPreambleCommands
\begin{document}
\pstree[linewidth=0.2pt,nodesepB=3pt]{\TC*}{%
   \TR{a}
   \TR{$\hat{X}$}
   \TR{b}
   \TR{x}}%
\end{document}
