%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 2-3-9 on page 47.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  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.
%% 

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.83385pt}

\StartShownPreambleCommands

\StopShownPreambleCommands
\begin{document}
\begin{picture}(100,40)
 \put(50,42){\circle*{2}} \put(51,43){\tiny1}
 \put(50,52){\circle*{2}} \put(51,53){\tiny2}
\qbezier(0,0)(50,42)(100,20) \qbezier[10](0,20)(50,52)(100,30)
\linethickness{3pt}
 \put(50,62){\circle*{2}} \put(51,63){\tiny3}
\qbezier[30](0,40)(50,62)(100,40)
\end{picture}
\end{document}