DisplayUsage      138 magick/command.c   DisplayUsage(void),
DisplayUsage      178 magick/command.c       DisplayImageCommand, DisplayUsage, 0 },
DisplayUsage     6161 magick/command.c           DisplayUsage();
DisplayUsage     6842 magick/command.c 	    DisplayUsage();
DisplayUsage     7399 magick/command.c         DisplayUsage();