ThresholdBlackQuantumOp  349 Magick++/lib/Magick++/Include.h   using MagickLib::ThresholdBlackQuantumOp;
ThresholdBlackQuantumOp  383 magick/effect.c   return QuantumOperatorImageMultivalue(image,ThresholdBlackQuantumOp,thresholds);
ThresholdBlackQuantumOp 1114 magick/enum_strings.c     quantum_operator=ThresholdBlackQuantumOp;
ThresholdBlackQuantumOp 1195 magick/enum_strings.c     case ThresholdBlackQuantumOp:
ThresholdBlackQuantumOp 2148 magick/operator.c     case ThresholdBlackQuantumOp: