Two main behaviours of interest:

* The CI monkey will not test a slice on a case that has an open sub-case.

* Parent cases can only be closed when all sub-cases are closed.

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So parent cases are useful:

* When its required that a fix needs to be staged into several steps.�� The last step is the parent case.�� As each sub-case is closed, the CI will immediately test the parent slice.

* When its useful to break up a task into several smaller steps. For example: Convert *all* "xxx" method calls��to "yyy" method calls ��might be too much to manage all at once. or "Make all CI tests green".�� In this case you might create an "over-arching" case.

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cheers -ben

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