wherein if said {HEAD ~ estimated target writing parameter} is not within {TAIL ~ said acceptable range}, modifying said target conductivity, 
wherein if said { HEAD ~ estimated target writing parameter } is not within { TAIL ~ said acceptable range } , modifying said target conductivity ,
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH