UndefinedPixel   1544 magick/option.c     { "Undefined", UndefinedPixel, UndefinedOptionFlag, MagickTrue },
UndefinedPixel   1860 tests/validate.c     for (j=0; reference_storage[j].type != UndefinedPixel; j++)
UndefinedPixel    426 tests/validate.h     { UndefinedPixel, 0 }