First and second end supports are provided which are capable of supporting respective first and second ends of the length of the barrier member when {HEAD ~ the barrier member} is extended between {TAIL ~ the end supports} 
First and second end supports are provided which are capable of supporting respective first and second ends of the length of the barrier member when { HEAD ~ the barrier member } is extended between { TAIL ~ the end supports }
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 REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL