[Moq] Example use of Mandatory Track Property

[Alan Frindell <[e-mail]>]

Hi, as came up during the Seattle interim, the Editors are having some
difficulty resolving issues related to Mandatory Track Properties because
there is not a specific example of how the community intends to use this
feature, if at all.  Some ideas have been tossed out, but I don't know that
anyone has thought deeply about the mechanics enough to write them down in
a draft.

Can those who are most supportive of this capability write a sample
extension draft exercising the capabilities before the San Francisco
meetings?

If no one has a documented example usage by then, I'll propose that we
remove the feature from the draft.

Thanks

-Alan