{TAIL ~ The s shaped movement} of the rear pane 3 means that the gap 16 tapers in the z lifting direction in such a way that it is not possible to free the object 18 by movement in {HEAD ~ a direction} in the xz plane 
{ TAIL ~ The s shaped movement } of the rear pane 3 means that the gap 16 tapers in the z lifting direction in such a way that it is not possible to free the object 18 by movement in { HEAD ~ a direction } in the xz plane
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH