Further, locking means are provided for the guide member and the guide means that allow to lock the support member and, hence, {HEAD ~ the arm rest padding} in place at {TAIL ~ certain height positions} 
at
Further , locking means are provided for the guide member and the guide means that allow to lock the support member and , hence , { HEAD ~ the arm rest padding } in place at { TAIL ~ certain height positions }
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 HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL