UndefinedPreview  387 Magick++/lib/Magick++/Include.h   using MagickCore::UndefinedPreview;
UndefinedPreview 1370 magick/option.c     { "Undefined", (ssize_t) UndefinedPreview, MagickTrue },
UndefinedPreview 1400 magick/option.c     { (char *) NULL, (ssize_t) UndefinedPreview, MagickFalse }
UndefinedPreview 2301 wand/mogrify.c               preview_type=UndefinedPreview;
UndefinedPreview 6925 wand/mogrify.c                 image_info->preview_type=UndefinedPreview;