A State is said to be active if it is part of the active state configuration. Source Unified Modeling Language 2.5.1
StateMachine execution is represented by transitions from one active state configuration to another in response to Event occurrences that match the Triggers of the StateMachine. Source Unified Modeling Language 2.5.1
An executing StateMachine instance can only be in exactly one state configuration at a time, which is referred to as its active state configuration. Source Unified Modeling Language 2.5.1
For example, one valid state configuration for an execution of the StateMachine depicted in Figure 14.9 is: <CourseAttempt - Studying – (Studying::Lab2, Studying::TermProject, Studying::FinalTest)>. Source Unified Modeling Language 2.5.1
Similarly, we can talk about such a hierarchy of substates within a composite State. This complex hierarchy of States is referred to as a state configuration (of a State or a StateMachine). Source Unified Modeling Language 2.5.1
Consequently, a particular “state” of an executing StateMachine instance is represented by one or more hierarchies of States, starting with the topmost Regions of the StateMachine and down through the composition hierarchy to the simple, or leaf, States. Source Unified Modeling Language 2.5.1
State configurations 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
Kinds of States 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
