UML?

[Midas]

From a bit of work, it seems like it might be handy in terms of looking at how the code itself is laid out (using class diagrams). As for how it works, I haven't looked at that yet.

Just for anyone else who searches and finds this later, there are some handy articles on UML at ObjectMentor.

(Sorry for lack of direct link, the site fails miserably at user-interface)
http://www.objectmentor.com/omReports/p ... icles.html