\ProvidesFile{autodemo.tex}[2008/04/19 common sample for autoarea.sty]
\documentclass[12pt]{article}
\usepackage{pictex,lipsum}
\autouse
\pagestyle{plain}
\renewcommand{\thepage}{\bfseries \sffamily \autofoot}
\nofiles
\begin{document}
\lipsum[1]
\[\beginpicture
\setcoordinatesystem units <1mm,1mm> point at 0 0 
%  \setplotarea x from -35 to 35, y from -35 to 35 %% compare to autoarea.sty 
\circulararc 360 degrees from 0 35 center at 0 0
\put {\textbf{\itshape X}} at -20 20
\endpicture\]
\lipsum[2]
\end{document}