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\part{PNG Compression}
I use the following two tools:

\begin{itemize}
\item AdvanceCOMP <a href="http://advancemame.sourceforge.net/comp-readme.html">http://advancemame.sourceforge.net/comp-readme.html</a>


\item OptiPNG <a href="http://optipng.sourceforge.net/">http://optipng.sourceforge.net/</a>


\end{itemize}
I run the following code in each graphics directory:

<pre><code>
advpng -z4 *.png
optipng -o7 *.png
</code></pre>
See \texttt{horde/framework/devtools/horde-compress-pngs.php} <a href="http://cvs.horde.org/framework/devtools/horde-compress-pngs.php">http://cvs.horde.org/framework/devtools/horde-compress-pngs.php</a>.

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