Thereby, the processing tool with little or no utilization history is spared having to go through the learning curve, and {TAIL ~ the associated costs} in delay and {HEAD ~ resources}, to arrive at a particular controller state, i.e. the processing tool does not have to go through the iterative process evaluate adapt procedure to refine its control parameters to achieve results within the desired specifications 
Thereby , the processing tool with little or no utilization history is spared having to go through the learning curve , and { TAIL ~ the associated costs } in delay and { HEAD ~ resources } , to arrive at a particular controller state , i.e. the processing tool does not have to go through the iterative process evaluate adapt procedure to refine its control parameters to achieve results within the desired specifications
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH