small note but we generate code directly off the spec and changing these all to the same name will cause the compile to have name conflicts in the way we generate the code. I'm find with people saying "too bad" fix your auto gen code if this really looks better to make them all the same name. It seemed like the key thing was Marc wanted them changed from "reserved" to "invalid" which is a change I agree with. But we could make them invalidAddr instead of invalid. That said, I don't really care - this is not big deal.