This is actually a pretty low-priority feature. The idea is that if your state chart has some parallel states (see AndDecomposition), you might want to have a single event cause multiple transitions, and it is convenient to have those transitions originate in a single state. For example, if you are modelling a piece of hardware that has parallel states representing up/down, enabled/disabled, and on/off, a transition into down might trigger simultaneous transitions into disabled and off.
-- DaleBrayden - 16 Jul 2002
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