XMI12 — XMI Tags

The XMI 1.1 spec makes reference to a number of XMI specific Tags.
Unfortunately, they are underspecified, and have names that do not
conform to the MOF Tag naming conventions given in the MOF 1.3 spec
in section 3.4.23.

To fully specify a Tag, you need to define the following:

1) The full tag name; e.g. "org.omg.xmi.data_type". (Note:
spelling!)

2) The metamodel class(es) that the Tag may be attached to; e.g.
Model::Class

3) The CORBA type and number of "values" (i.e. parameters) that a Tag
instance may have.

4) The meaning of the Tag in all contexts that it is meaningful.

Finally, it would be a good idea if all of the XMI Tags were defined in
a
separate section ... possibly with cross references to the places where
they are used in production sets.