An event is alive from the end of the step that generated it until the end of the following step. The following examples illustrate how events work.
In Chart A, make the following assumptions:
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The transition from S1 and S2 is taken. This causes the action of generating event F (which is present during the next step).
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● Perform another Step triggered by F (event E is no longer present).
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In Chart B, make the following assumptions:
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The transition from S1 and S2 is taken. This causes the action of generating event F (which is present during the next step).
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The transition from S3 to S4 does not occur because only event E is present during this step.
● Perform another Step.
The transition from S3 to S4 is not taken because only event F is present during the step.