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