There are many undocumented classes left in the system Object allSubclasses select: [:each | each comment includesSubstring: 'xxxxx' ] Exactly 2731 by now in Pharo3.0 Latest update: #30731. Around 400 classes are test classes with a pair class that they test as a test unit and I think these can easily include a comment like "This is a test class for ...". The other ones are left for humans. With the new release we have the chance: - to improve also on this side which would especially help newcomers after grabbing the new release and browsing around - to add class comments before the release date 31.3.2014 since they are safe to integrate SO PLEASE: add class comments for traits, athens-text, compiler, compression, debugger, filesystem, ... Even a short comment makes more sense than no comment! Maybe we should add a test to ReleaseTest class that forces us to do it and that stays red until the situation improved. Maybe also a check to have no uncategorized methods left. Thx T.