The cross section and {HEAD ~ luster} of {TAIL ~ the fibers} or the filament may be varied, e.g., as dictated by requirements of the intended end use 
of
The cross section and { HEAD ~ luster } of { TAIL ~ the fibers } or the filament may be varied , e.g. , as dictated by requirements of the intended end use
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH