C2MS11 — Clarify the UML diagrams regarding the values for the fields inherited from Message Header

This issue is related to C2MS11-30, which is about the table immediately prior to every message UML diagram. The UML diagrams, for example figure 8-3, seem to indicate that "MESSAGE-TYPE" and "MESSAGE-SUBTYPE" are fields in the individual message when they are actually in the Message Header.

Do this in 1.1

Remove the current block attributes, and instead show Constraints as in:

with the required values. Display the full Message Header classifier for clarity.

If this proposal is accepted, a complete set of before and after images will be provided as part of the RTF Report

Note that the final images may be a convergence with other voted in global changes. In other words, if this proposal is accepted and other figure-affecting proposals are also accepted, all sets of changes will be made in the final "after" images in the RTF Report.