wolffd@0: %Latex
wolffd@0: \documentstyle[fleqn,psfig,12pt,pstricks,pst-node,pst-tree]{article}
wolffd@0: 
wolffd@0: %\documentclass[fleqn,12pt]{article}
wolffd@0: %\usepackage{pstricks,pst-node,pst-tree}
wolffd@0:  
wolffd@0: %latex2e
wolffd@0: %\documentclass{article}
wolffd@0: %\usepackage{epsfig,alltt,fancybox}
wolffd@0: 
wolffd@0: \setlength{\textwidth}{6.5in}
wolffd@0: \setlength{\oddsidemargin}{0in}
wolffd@0: \setlength{\textheight}{8.5in}
wolffd@0: \setlength{\headheight}{0in}
wolffd@0: \setlength{\headsep}{-0.5in}
wolffd@0: \setlength{\parindent}{0in} % block style
wolffd@0: \setlength{\parskip}{0.3cm}
wolffd@0: 
wolffd@0: \newcommand{\mytitle}[1]{\newpage \huge \begin{center}#1\vspace{0.8cm}\end{center} \LARGE}
wolffd@0: 
wolffd@0: 
wolffd@0: \begin{document}
wolffd@0: 
wolffd@0: \mytitle{Hello world}
wolffd@0: 
wolffd@0: Hello world
wolffd@0: 
wolffd@0: \centering
wolffd@0: $
wolffd@0: \pstree[treemode=R]{\Tcircle{b}}{%
wolffd@0:   \pstree{\TC*^{a_1}}{%
wolffd@0:      \Tr{b_{11}}^{x_1}
wolffd@0:      \Tr{b_{12}}_{x_2}
wolffd@0:    }
wolffd@0:   \pstree{\TC*_{a_2}}{%
wolffd@0:      \Tr{b_{21}}^{x_1}
wolffd@0:      \Tr{b_{22}}_{x_2}
wolffd@0:    }
wolffd@0: }
wolffd@0: $
wolffd@0: 
wolffd@0: 
wolffd@0: 
wolffd@0: \mytitle{Hello world 2}
wolffd@0: 
wolffd@0: \psline[linewidth=0.5cm](0,0)(2,0)
wolffd@0: \psline[linewidth=0.05cm](2,-1)(6,-1)
wolffd@0: 
wolffd@0: 
wolffd@0: 
wolffd@0: \end{document}