''Problem''

How do you establish the boundary between the system and its environment when 
you're not sure what the scope of the system is?

''Context''
	* TheUseCaseModel
	* FollowYourScript

''Solution''

Establish a general policy for the purpose and scope of the use case model.

''Related Patterns''

	* CastingCall
	* ExternalEntity
''Author''

Steve Adolph

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I would draw the boundary around a small achievable piece of functionality and wait till people complain that it's in the wrong place. --JohnFarrell