Scenario transitions are composed of mode transitions.
A mode transition is the effect of an event on the mode.
In practice, mode transitions are conditional, expressed in terms of rules and constraints. Typically the rules are defined in terms of the situation and the context .
A transition is consistent if the effect of the event does not depend on the situation or the context .
A mode transition is simple if it is not consistent, and it depends on the mode of the same state set only.
A simple transition is normative if it the mode dependency describes normative activity.
Updated on 12 Jun 2016.