attaching another end of the line to a second support point to thereby secure {HEAD ~ the fabric} to {TAIL ~ the support structure} 
to
attaching another end of the line to a second support point to thereby secure { HEAD ~ the fabric } to { TAIL ~ the support structure }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL