Editing Finite-state machine (section)

=== UML state machines ===
The [[Unified Modeling Language]] has a notation for describing state machines. [[UML state machine]]s overcome the limitations{{citation needed|date=March 2021}} of traditional finite-state machines while retaining their main benefits. UML state machines introduce the new concepts of [[UML state machine#Hierarchically nested states|hierarchically nested states]] and [[UML state machine#Orthogonal regions|orthogonal regions]], while extending the notion of [[UML state machine#Actions and transitions|actions]]. UML state machines have the characteristics of both [[Mealy machine]]s and [[Moore machine]]s. They support [[UML state machine#Actions and transitions|actions]] that depend on both the state of the system and the triggering [[UML state machine#Events|event]], as in Mealy machines, as well as [[UML state machine#Entry and exit actions|entry and exit actions]], which are associated with states rather than transitions, as in Moore machines.{{citation needed|date=January 2017}}