The closure according to the present invention, whose closure flap has an internal locking mechanism by which the closure flap can be locked and unlocked by the user, has the advantage that it offers a technically simple option for a closure {HEAD ~ whose locking device} is not accessible from {TAIL ~ the outside} 
The closure according to the present invention , whose closure flap has an internal locking mechanism by which the closure flap can be locked and unlocked by the user , has the advantage that it offers a technically simple option for a closure { HEAD ~ whose locking device } is not accessible from { TAIL ~ the outside }
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