{TAIL ~ A data processor} is connected to the source, the power control apparatus and the temperature sensors and control the amount of heat in {HEAD ~ accordance} with a desired heating pattern 
{ TAIL ~ A data processor } is connected to the source , the power control apparatus and the temperature sensors and control the amount of heat in { HEAD ~ accordance } with a desired heating pattern
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH