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%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 3-6-9 on page 136.
%% 
%%  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{159.83385pt}
\StartShownPreambleCommands
\usepackage[metapost]{mfpic}
\usepackage{ifthen}
\StopShownPreambleCommands
\begin{document}
\opengraphsfile{tmp}
\newcounter{mfcntA}
\begin{mfpic}[1.5]{-30}{40}{-25}{25}
\setcounter{mfcntA}{-30}
  \whiledo{\themfcntA<31}{%
    \ellipse[\themfcntA]{(0,0),40,12}
    \addtocounter{mfcntA}{6}}%
\end{mfpic}
\closegraphsfile
\end{document}