means for moving said carriage in {HEAD ~ the machine direction} in {TAIL ~ response} to movement of said strip, 
means for moving said carriage in { HEAD ~ the machine direction } in { TAIL ~ response } to movement of said strip ,
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH