QuantizePreview   398 Magick++/lib/Magick++/Include.h   using MagickCore::QuantizePreview;
QuantizePreview  3051 magick/effect.c       case QuantizePreview:
QuantizePreview  1384 magick/option.c     { "Quantize", (ssize_t) QuantizePreview, MagickFalse },