To use this, you'll need the doxygen & graphviz tools.
http://www.doxygen.org/
http://www.graphviz.org/
put the file in your checkout directory and run doxygen
You'll get a html directory full of generated
documentation (it uses the javadoc comments + its
analysis of the code structure).
Its all cross referenced, which is useful when trying to
understand how a feature works.
You may need to tweak INPUT &
OUTPUT_DIRECTORY parameters to match your
enviroment/preferences.
Doxyfile
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Uhh... what's wrong with good old "javadoc"?