ThresholdWhiteEvaluateOperator  548 Magick++/lib/Magick++/Include.h   using MagickCore::ThresholdWhiteEvaluateOperator;
ThresholdWhiteEvaluateOperator 1068 magick/option.c     { "ThresholdWhite", ThresholdWhiteEvaluateOperator, UndefinedOptionFlag, MagickFalse },
ThresholdWhiteEvaluateOperator  394 magick/statistic.c     case ThresholdWhiteEvaluateOperator: