usage             257 src/cmp.c      	usage ();
usage              74 src/diff.c     static void usage (void);
usage             537 src/diff.c     	  usage ();
usage             185 src/diff3.c    static void usage (void);
usage             290 src/diff3.c    	  usage ();
usage             541 src/sdiff.c    	  usage ();