{TAIL ~ The end supports} can allow the extended barrier member to move in {HEAD ~ a direction} transverse to the width of the barrier member when desired 
{ TAIL ~ The end supports } can allow the extended barrier member to move in { HEAD ~ a direction } transverse to the width of the barrier member when desired
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH