393 	register int c1, c2;  in eqn()  local
570 	register int c2;  in refer()  local
653 #define	tomac(c1, c2)		((((c1) & 0xFF) << 8) | ((c2) & 0xFF))  argument
654 #define	frommac(src, c1, c2)	(((c1)=((src)>>8)&0xFF),((c2) =(src)&0xFF))  argument
670 #define	M(cond, c1, c2, func) {cond, tomac(c1, c2), func}  argument
870 	register int c1,c2;  local
989 	int	c1, c2;  local
1010 	int	c1, c2;  local
1046 	int	c1, c2;  local
1062 	int	c1, c2;  local
1071 	int	c1, c2;  local
1150 	int	c1, c2;  local
1192 	reg	int	c2;  in comline()  local