UML25 — UML 2.5 class_name

In section 17.3.4 <class_name> appears on the right hand side of the BNF but it is not defined in any other BNF statement. This is the only place in the spec where <class_name> appears. <class-name> appears in the text following the BNF. <class_name> in the BNF should be changed to <class-name>.

Recommend that we add the following statement to the BNF

<class-name>::=<Variable> | <Parameter> | <Property>

The Interactions working group agreed during the Berlin meeting that class_name is not optimal. In fact,
the non-terminal symbol class_name does not reflect what it actually represents, i.e., the name of the Type
that the ConnectableElement, which is represented by the Lifeline, is typed with.
In addition, the font style of the non-terminal symbols has to be set to italics.