<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass{ppex}
\nonstopmode
\usepackage [frame]{xy}
\pagestyle{empty}
\setlength\textwidth{183.0pt}
\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage [frame]{xy}
\[\begin{xy}
 0*+[o][F]{DL};&lt;2cm,1cm&gt;*+[F]{UR} **@{.}
 ?&lt;*@{&lt;&lt;} ?(0.5)*!/_3mm/{\Omega} ?&gt;&gt;&gt;*@{&gt;}
\end{xy}\]
\end{document}
</pre></body></html>