A Transition represents a relationship between two States, indicating that an object in the first State will enter the second State and perform specified actions when a specified event occurs.
Relationship to the state (Atomic State, Concurrent State, Entry State, Exit State, Final State, Fork State, History State, Initial State, Join State, Junction State, Sequential State or Submachine State) that is the end item for the Transition.
Relationship to the state (Atomic State, Concurrent State, Entry State, Exit State, Final State, Fork State, History State, Initial State, Join State, Junction State, Sequential State or Submachine State) that is the start item for the Transition.