Plan 9 from Bell Labs 2013-02-26

sys/include/a.out.h

@@ -14,7 +14,7 @@ struct	Exec
 #define HDR_MAGIC	0x00008000		/* header expansion */
 
 #define	_MAGIC(f, b)	((f)|((((4*(b))+0)*(b))+7))
-#define	A_MAGIC		_MAGIC(0, 8)		/* 68020 */
+#define	A_MAGIC		_MAGIC(0, 8)		/* 68020 (retired) */
 #define	I_MAGIC		_MAGIC(0, 11)		/* intel 386 */
 #define	J_MAGIC		_MAGIC(0, 12)		/* intel 960 (retired) */
 #define	K_MAGIC		_MAGIC(0, 13)		/* sparc */