To enable reuse, the three core components of Requirement Sets, Requirements, and Documents exist as their own separate building blocks. A single type of Document can be used in different ways across multiple Requirements, and a Requirement can be used in different ways across multiple Requirements Sets.

At the appropriate stage in the process, the parent case will create a Requirement Set and the necessary subcases for each Requirement in that set. The Requirement Set structure allows the passing of parameters to and from the underlying Requirements work objects for use in processing. After each Requirement in the set is processed and satisfied, the parent process can continue.

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