Lst_Member
if (Lst_Member(&pgn->children, gn) == NULL) {
if (Lst_Member(&pgn->children, gn) == NULL) {
extern LstNode Lst_Member(Lst, void *);
extern LstNode Lst_Member(Lst, void *);
if (Lst_Member(l, d) != NULL)
LstNode ln2 = Lst_Member(&s->parent->cp, s);
if (Lst_Member(&suff->parents, targ->suff) == NULL)