GrayscalePreview  379 Magick++/lib/Magick++/Include.h   using MagickLib::GrayscalePreview;
GrayscalePreview 1143 TclMagick/generic/TclMagick.c         SpiffPreview,           DullPreview,        GrayscalePreview,  QuantizePreview,
GrayscalePreview  339 coders/preview.c       case GrayscalePreview:
GrayscalePreview 1036 magick/enum_strings.c     preview_type=GrayscalePreview;