In FIG 6, {TAIL ~ the fabric gripping lines} are engaged upon the top piece of {HEAD ~ fabric} in the stack 
In FIG 6 , { TAIL ~ the fabric gripping lines } are engaged upon the top piece of { HEAD ~ fabric } in the stack
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH