UML14 — UML 1.4 RTF Issue: Association generalization has notation but no semantics

Association generalization has notation but no semantics.

The notation document says:

[p 3-80] Generalization may be applied to associations as well as
classes, although the notation may be messy because of the multiple
lines. An association can be shown as an association class for the
purpose of attaching generalization arrows.

But no semantics is defined for association generalization. That's why
it's on the UML 2.0 roadmap. The above should be removed for 1.4.

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