Still additional protection can be provided for user 20 by moving {HEAD ~ flap} 22 from {TAIL ~ an uncovered configuration}, as shown in FIG 2, to a covered configuration, as shown in FIG 1 
Still additional protection can be provided for user 20 by moving { HEAD ~ flap } 22 from { TAIL ~ an uncovered configuration } , as shown in FIG 2 , to a covered configuration , as shown in FIG 1
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH