7207 AI progress

I had an action item to review the concreted changes for resolving  http://www.w3.org/Bugs/Public/show_bug.cgi?id=7207.

The comments below apply to all the specifications (Enum, Eventing, MEX, Transfer, and Frag). In the Compliance section of those specifications:

Ø  For any message defined by this specification, any OPTIONAL feature in the message MAY be used by the sender of the message, however receivers of those messages MUST support those OPTIONAL features unless other behavior is explicitly defined by this specification.
Change to :

Ø  For any message defined by this specification, any OPTIONAL feature elements in the message MAY be used by the senders of the message, however receivers of those messages MUST understand those OPTIONAL features elements, unless other behavior is explicitly defined by this specification.
Thanks.