target evaluating means for viewing said luminescent target means and for processing {HEAD ~ luminescent values} at {TAIL ~ selected test points} to develop test values as a function of luminescent values; and 
at
target evaluating means for viewing said luminescent target means and for processing { HEAD ~ luminescent values } at { TAIL ~ selected test points } to develop test values as a function of luminescent values ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH