Edition dialog does not allow simple creation of UML state transitions
State diagram transitions, as you well know, are in the format:
Event [predicate] / actionlist
However, the edition dialog does not appear to make evident that simplicity, but offers, among others, the following entries:
This is not identical to EVENT [pred] / ACTION LIST that I would expect to see.
Perhaps I misunderstood how starUML creates UML2 compliant transitions?