kind = external means that the Transition exits its source Vertex. If the Vertex is a State, then executing this Transition will result in the execution of any associated exit Behavior of that State. Source Unified Modeling Language 2.5.1
The semantics of a Transition depend on its relationship to its source Vertex. Three different possibilities are defined, depending on the value of the Transition’s kind attribute ... Source Unified Modeling Language 2.5.1
Transitions This content has been marked as discussing an ADVANCED topic! Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:03: UML Behavior: StateMachines quick start Slide kind UML StateMachine Diagram
If the composite State has an exit Behavior defined, it is executed after any effect Behavior of the incoming inside Transition and before any effect Behavior of the outgoing external Transition. Source Unified Modeling Language 2.5.1
In a well-formed model, such a Transition should have a corresponding external Transition outgoing from the same exit point, representing a continuation of the terminating Transition. Source Unified Modeling Language 2.5.1
external - Implies that the Transition, if triggered, will exit the composite (source) State. Source Unified Modeling Language 2.5.1
TransitionKind is an Enumeration type used to differentiate the various kinds of Transitions. Source Unified Modeling Language 2.5.1
