UndefinedPixel   1473 magick/option.c     { "Undefined", (ssize_t) UndefinedPixel, MagickTrue },
UndefinedPixel    901 tests/validate.c     for (j=0; reference_storage[j].type != UndefinedPixel; j++)
UndefinedPixel    423 tests/validate.h     { UndefinedPixel, 0 }