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Version 2.2
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20 - Modifications from previous releases


20.1 - Semaphore manipulation

20.1.1 V1.0 to V1.1

The semaphore take now returns a status that indicates if the take attempt timed out or was successfull. The semaphore lifeline gets grayed when the semaphore is unavailable.

20.2 - Object orientation

20.2.1 V1.1 to V1.2

There has been an error in the object orientation chapter: it is not possible to declare a process class or a block class in a block class definition diagram.

20.2.2 V1.2 to V2.0

20.2.3 V2.1 to V2.2

20.3 - Messages

20.3.1 V1.1 to V1.2

20.3.2 V2.0 to V2.1

20.4 - MSC

20.4.1 V1.1 to V1.2

20.5 - Task

20.5.1 V1.2 to V2.0

STACK parameter has been added as a parameter when creating a task.

20.6 - Organisation

20.6.1 V1.2 to V2.0

Chapters have been re-organized.

20.7 - New concept

20.7.1 V2.1 to V2.2

"Composite state" has been introduced



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