\documentclass{article}
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This document contains a figure. 
The figure \ref{fig:lion} is a drawing by Duane Bibby. 
\begin{figure}
\centering
\label{fig:lion}
\caption[CTAN Lion]{CTAN lion drawing by Duane Bibby; thanks to www.ctan.org}
\includegraphics[scale=0.8, angle=30]{lion_orig.png}
\end{figure}
\end{document}