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