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