KEY
#define KEY 0
#define KEY 82 /* print key_t 0 as IPC_PRIVATE */
#define KEY xmm1 /* temporary, 128 bits */
#define KEY(cache) ((struct key *) ((int) cache + BLKH_SIZE))
#define KEY(P, N) (((PAGE8 *)(P)) + KEY_OFF((P), (N)))
}KEY;
#define KEY(code) (code)