Owning Palette: Statechart Development Objects
Installed With: Statechart Module
Splits one incoming transition segment into multiple outgoing segments. You can place this connector within only a state.
Use the Fork connector to create one transition to multiple substates. Each substate must exist in a different orthogonal region.

You can create only one incoming transition segment to a Fork connector. You must create at least two outgoing segments from a Fork connector. Each outgoing segment must connect to a substate in a different orthogonal region. The statechart considers all segments as a single transition, even though the outgoing segments terminate in different substates.