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Control ObjectsFrom use cases: one for each.Behavior that remains after being assigned to entity and interface object from one use case.If no behavior left---no control object for the use case.Remaining behavior is complicated—several control objects.One actor for each control object because system change originate from actor.Control ObjectsHow much behavior in control object?Initially model without using control object at all.Certain behavior cannot be placed, or is spread over objects.These are placed in control objects.
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