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This content has been marked as discussing an ADVANCED topic!
NOTATION REFERENCE ONLY: This diagram is not meant to be executable!
Please not do not be overwhelmed by this advanced reference card diagram! Each main aspect is explored in dedicated tutorial slides and in the Webel IT Australia UML and SysML courses. And you don't have to learn every single possible capability of Activities up-front to get started with them:
Tool concerns:
Noteworthy;
UML-2.5.1: 'An Activity may have more than one InitialNode. If an Activity has more than one InitialNode, then invoking the Activity starts multiple concurrent control flows, one for each InitialNode. (Additional concurrent flows may begin at input ActivityParameterNodes and enabled ExecutableNodes ...'
For SysML Activity Diagrams only: