It's simplified (it omits most testing releases, for example) and is a little rough in appearance, but should make Mozilla development as well as concepts like a "trunk" or "branch" easier to understand.
Future software releases are shaded in gray.
(Maybe I should add some leaves, too!)
UserAgent: Mozilla/5.0 (Windows; U; Win95; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0



3.0