1.3.1.1.9 ActivityGroup
Nodes and edges can belong to more than one group. They have no inherent semantics and can be used for various purposes. Subclasses of ActivityGroup may add semantics. ActivityGroups belong to an activity or (exclusively) to another ActivityGroup.
InterruptibleActivityRegionModelElementActivityPartitionActivityGroupActivity
Association
Description
InActivity : Activity [0..1]
Top-level groups in the activity.