The Webel recipe for pragramatic SE with SysML adopts the MagicDraw/Cameo tool friendly approach of using a SystemContext as 'subject' of top-level UseCases (although using a System as 'subject' can also be used).
Webel IT's summaries of MagicGrid® for SysML/MBSE with Cameo are offered for the interest of MagicGrid users for informative and educational purposes only. They are not recommendations to use (or not use) MagicGrid, and are not officially endorsed.
SysMLv1: MagicDraw/Cameo: Having a SystemContext as the 'subject' of each main UseCase plays nicely with the feature for automated creation of usage-level allocation swimlanes in SysML Activity Diagrams for part properties. But it's not the only way.
SysML/MBSE: Cameo/MagicDraw: MagicGrid® and the MagicGrid® Book of Knowledge: A pragmatic review of some selected aspects by Dr Darren of Webel IT Australia Keywords Keywords Systems Modeling Language SysML MD SysML Cameo Systems Modeler Model-Based Systems Engineering CATIA Magic MagicGrid Webel IT's summaries of MagicGrid® for SysML/MBSE with Cameo are offered for the interest of MagicGrid users for informative and educational purposes only. [UML-2.5.1] CallBehaviorAction::behavior : Behavior [1..1] ... The Behavior being invoked.
