A plurality of linkages translate movement of the stylus along {HEAD ~ its guide} to {TAIL ~ the cutter} along its guide 
A plurality of linkages translate movement of the stylus along { HEAD ~ its guide } to { TAIL ~ the cutter } along its guide
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH