UndefinedEvents  1706 magick/log.c       log_info->event_mask=UndefinedEvents;
UndefinedEvents  1291 magick/option.c     { "Undefined", UndefinedEvents, UndefinedOptionFlag, MagickTrue },
UndefinedEvents  1312 magick/option.c     { (char *) NULL, UndefinedEvents, UndefinedOptionFlag, MagickFalse }
UndefinedEvents   473 wand/compare.c             if (event_mask == UndefinedEvents)