TAIL_ENDSYNC
#define TAIL_CHKSUM(N) (TAIL_ENDSYNC(N) - TAIL_CHKSUM_LEN)
*(fbp->psave + TAIL_ENDSYNC(real_size)) != Endsync[0]
|| *(fbp->psave + TAIL_ENDSYNC(real_size) + 1) != Endsync[1]
(void)memcpy (buf + TAIL_ENDSYNC(size), Endsync, TAIL_ENDSYNC_LEN);