Specifying the State that a Region Executes First (Statechart Module)

Complete the following steps to specify the state that a region executes first.

1. Place an Initial pseudostate on the statechart diagram.
   
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2. Create a transition from this pseudostate to the state that you want to execute first.
3. (Optional) Define any actions for this transition. You cannot define a trigger or guard for this transition.

For example, consider the following figure:

Each region must have an Initial pseudostate. In the previous figure, the statechart executes State 1 first. If the statechart takes the transition into State 2, the statechart executes State 3 first.

Note  The Terminal pseudostate specifies the state that can terminate the enclosing region.