Message sequence chart: Difference between revisions

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New reference for PSC to an SDL Forum paper.
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m Comparison to UML: UML 2 sequence diagram is strongly inspired by MSC.
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==Comparison to UML==
UML 2.0 Sequence Diagram looksis verystrongly similarinspired toby the ITU-T MSC. Still, for historical butreasons, the default basic principles are quite different:
* Lifelines
:* In an MSC, the vertical lines are autonomous execution entities. They usually represent state machines executing in parallel. The state machines need not be on the same computer.