KS_ADD
k->k_state = KS_ADD;
k->k_state |= (KS_ADD | KS_DEL_ADD);
k->k_state |= (KS_ADD | KS_DEL_ADD);
k->k_state |= (KS_ADD | KS_DEL_ADD);
if (k->k_state & KS_ADD) {
k->k_state &= ~(KS_ADD|KS_CHANGE|KS_DEL_ADD);
k->k_state &= ~(KS_DELETE | KS_ADD | KS_CHANGE | KS_DEL_ADD