UML22 — formal/03-03-01 : Omission of definition of Class "Action"

I believe I found an omission from the UML 1.5 Specification formal/03-03-01:

p. 2-112, Fig. 2-18: Association between "Message" and "Action (from Common Behavior)"

In Sec. 2.9 Common Behavior; none of the diagrams or text specify Class "Action".

p. Index-1 cites "Action" p 2-103.

p. 2-103 has no mention of "Action".

The first item in Sec. 2.9.3 is "2.9.3.1 AttributeLink", not "2.9.3.1 Action" as would be alphabetized.

My question is what is definition of the "Action" Class in Fig. 2-18?

closed no change