a tether passing through the stitched loops to facilitate {HEAD ~ application} of tension to {TAIL ~ the apparatus} 
a tether passing through the stitched loops to facilitate { HEAD ~ application } of tension to { TAIL ~ the apparatus }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL