{TAIL ~ A predetermined length} of fabric material is then positioned to the frame to overly the retention groove of {HEAD ~ the side members} 
{ TAIL ~ A predetermined length } of fabric material is then positioned to the frame to overly the retention groove of { HEAD ~ the side members }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD