Pseudostates are vertices of a state machine which the state machine does not remain in but passes right through while processing events.

There are pseudostates that belong to a region and some that belong to a composite state.

Pseudostates that belong to a region are:

• Initial pseudostate

• Terminate pseudostate

• Choice

• Junction

• Join

• Fork

Pseudostates that belong to a composite state are:

• Entry point

• Exit point

• Shallow history

• Deep history