Thing type 760, PolyObject Anchor, is a type of Thing that determines where a PolyObject will be located in relation to the PolyObject Spawn Point. This Thing can be placed either inside the PolyObject itself or in the sector surrounding it. The anchor's X/Y position determines the relative X/Y co-ordinates of the spawn point to the PolyObject itself (Z position is not used). The anchor's Angle must be equal to the ID of the PolyObject it belongs to. For more information on PolyObject creation, refer to the PolyObject tutorial.