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Approve: So that this version of the checklist can move into history and a new checklist can be generated, it is important to approve the checklist when all the checkpoints that were included have been marked as complete. Note: For a checklist set up with automatic approval, it will not be possible to approve the checklist manually.
Also note that a checklist is regenerated by registering a counter reading on the checklist, this means that any check points due in hours appear on the checklist immediately when you perform the checklist.