For a list of transitions defined in the diagram, right-click
a transition line in the diagram and select Select Trigger.
The menu that displays lets you select one of the available triggers
including inherited triggers, that have already been defined for the
class.
About this task
Notice that if there are more triggers
that can appear on the menu, a Browse command displays.
Click Browse to open the Select Trigger window
that shows you all the triggers that are available.