UndefinedLayer    663 Magick++/lib/Magick++/Include.h   using MagickCore::UndefinedLayer;
UndefinedLayer   1227 magick/option.c     { "Undefined", UndefinedLayer, UndefinedOptionFlag, MagickTrue },
UndefinedLayer   1244 magick/option.c     { (char *) NULL, UndefinedLayer, UndefinedOptionFlag, MagickFalse }