Hi
I continued to clean that classes have categories and method protocols
because it was not finished.
This entry is just adding protocol in the classes that were missing it,
adding comments, and fixing some local senders
It does not remove the category API but puts it in a accessing-backward
protocol and in a second step I will fix all the senders I can (ie not
Metacello for example).
Category is really overloaded and we get lost when trying to understand
code.
I want to rename RBRule 'category' into 'kind' for this reason.
Stef
