If you need help correlating directories to modules, try the module owner's list . It's possible to search for words or strings in identifiers or their documentation. No ETA on this one. Check out the main Doxygen site for more information. At some point, this will be more elegant and robust.
Feedback is welcome.
Thanks to Dimitri van Heesch , the primary author of the doxygen tool, for writing it and making it available to the world. The Mozilla Organization.