UML25 — Show how UML is a MOF metamodel

We often say something like "UML is a MOF metamodel" or similar. It would be useful, I think, to show somewhere, perhaps in this subsection, exactly how that happens. For example, UML Classifier is an instance of MOF Classifier (right?), but nowhere do we actually SHOW how this happens. I think it would be instructive to show the general audience explicitly how this happens.
Proposed Resolution: Add described text.

This material belongs in clause 6.2. Insert some text explaining that the abstract syntax of UML is defined
by a UML model, replacing the paragraph that belonged to 2.4.1.