EI/EMIX spec wording clarification request

In the Introduction sections, both  the EI and EMIX specs say they each provide
... a set of messages to communicate price ...  .  1
To have them both say they provide the same thing blurs the line of where EI stops and EMIX starts.
The terminology could use some clarification/definition.  I'd propose something more along the lines of EMIX providing  an XML vocabulary for communication of Price and Product information , or something similar, to distinguish it from getting into the messaging / communication services context of EI.
Does anyone else have suggestions/opinions on this?  I think we have several issues around clarification of EI/EMIX boundaries so if that is in process perhaps this can be added to the list.  I don't know how those are being tracked since they're between TCs.
-A
1  EMIX wd22 .doc lines 176-177:
This document defines a set of messages to communicate Price and Product definition for power and energy markets ...
1  EI wd22 .pdf  line 10:
Energy Interoperation defines a set of messages to communicate price, reliability, and emergency conditions ...