-produce cross-referenced documentation from the Mesa sources.
-This is not included in the normal Mesa distribution.
-Download Mesa from CVS if interested.
+produce cross-referenced documentation from the Mesa source code.
+</p>
+
+<p>
+The Doxygen configuration files and generated files are not included
+in the normal Mesa distribution (they're very large).
+To generate Doxygen documentation, download Mesa from CVS, change to
+the <code>doxygen</code> directory and run <code>make</code>.