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# Lock Exclusive

Lock Exclusive only appears in the menu in multi-user (collaborate) mode. This feature will allow you to lock the Project Book for your exclusive use. In this mode, individual records will not need to be checked out in order to make changes. However, all changes will need to be checked in prior to releasing the exclusive lock. If a Project Book is locked exclusively, another user may not modify any objects in the Project Book until the exclusive lock is released.