SumEvaluateOperator  559 Magick++/lib/Magick++/Include.h   using MagickCore::SumEvaluateOperator;
SumEvaluateOperator 1053 magick/option.c     { "Sum", SumEvaluateOperator, UndefinedOptionFlag, MagickFalse },
SumEvaluateOperator  378 magick/statistic.c     case SumEvaluateOperator: