UndefinedRule     279 Magick++/lib/Magick++/Include.h   using MagickCore::UndefinedRule;
UndefinedRule     948 magick/option.c     { "Undefined", (ssize_t) UndefinedRule, MagickTrue },
UndefinedRule     951 magick/option.c     { (char *) NULL, (ssize_t) UndefinedRule, MagickFalse }