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■ To support development and testing activities, the
use cases defined earlier in the project must be more
fully elaborated.
■ The use-case model is reviewed and will often be
refactored as well.
A well-elaborated use case also defines all
alternative flows, pre-and post-conditions, and
special requirements.
■ The additional use-case relationships extend and
include help the teaM structure and maintain theuse
case model.