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UML Tour - Exploding Objects (Decomposition)
A Use Case can be exploded into a new sub-diagram
that breaks its functionality up into smaller parts. For example, at a high
level diagram, maintain inventory may be useful as a use
case. However,
you may want to further specify what use cases are involved
in, and what actors are responsible for maintaining the
inventory.
Many other diagram objects in Visual Case can be
exploded like the Use Case. These objects include
the package, activity, component, node, and state and all have
the explode into menu item displayed when you right click on
them.
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