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Legacy:Mover/ReturnGroup

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The return group this mover belongs to. All movers in a return group form a linked list of "followers" with each mover's Leader pointing to the main mover that should be triggered, bumped, or otherwise activated. The leading mover will tell its Follower to open/close whenever it opens or closes itself. The follower in turn will do the same with its own follower, and so on. Make sure only one mover in a return group is flagged as the leader, otherwise you might experience weird stuff including "Infinite Script Recursion" crashes.