585     sg_fr_ptr sg_fr = UNTAG_SUBGOAL_LEAF_NODE(TrNode_sg_fr(current_node));  local
590     if (SgFr_first_answer(sg_fr) == NULL) {
591       if (SgFr_state(sg_fr) < complete) {
598     } else if (SgFr_first_answer(sg_fr) == SgFr_answer_trie(sg_fr)) {
603 …traverse_answer_trie(TrNode_child(SgFr_answer_trie(sg_fr)), &str[str_index], 0, arity, 0, TRAVERSE…
604       if (SgFr_state(sg_fr) < complete) {
972   sg_fr_ptr sg_fr;  local
1007     new_subgoal_frame(sg_fr, preg);
1008     TrNode_sg_fr(current_sg_node) = (sg_node_ptr) sg_fr;
1011     sg_fr = UNTAG_SUBGOAL_LEAF_NODE(TrNode_sg_fr(current_sg_node));
1013     if (SgFr_state(sg_fr) <= ready) {  /* incomplete or ready */
1014       remove_from_global_sg_fr_list(sg_fr);
1025   return sg_fr;
1029 ans_node_ptr answer_search(sg_fr_ptr sg_fr, CELL *subs_ptr) {  argument
1036   current_ans_node = SgFr_answer_trie(sg_fr);
1038   if (IsMode_GlobalTrie(TabEnt_mode(SgFr_tab_ent(sg_fr)))) {
1041 …current_ans_node = answer_search_terms_loop(sg_fr, current_ans_node, Deref(subs_ptr[i]), &vars_ari…
1046 …   current_ans_node = answer_search_loop(sg_fr, current_ans_node, Deref(subs_ptr[i]), &vars_arity);
1104 void update_answer_trie(sg_fr_ptr sg_fr) {  argument
1107   free_answer_hash_chain(SgFr_hash_chain(sg_fr));
1108   SgFr_hash_chain(sg_fr) = NULL;
1109   SgFr_state(sg_fr) += 2;  /* complete --> compiled : complete_in_use --> compiled_in_use */
1110   current_node = TrNode_child(SgFr_answer_trie(sg_fr));
1154     sg_fr_ptr sg_fr;  local
1156     sg_fr = UNTAG_SUBGOAL_LEAF_NODE(TrNode_sg_fr(current_node));
1157     free_answer_hash_chain(SgFr_hash_chain(sg_fr));
1158     ans_node = SgFr_answer_trie(sg_fr);
1163     remove_from_global_sg_fr_list(sg_fr);
1165     FREE_SUBGOAL_FRAME(sg_fr);
1320       sg_fr_ptr sg_fr = UNTAG_SUBGOAL_LEAF_NODE(sg_node);  local
1324       if (SgFr_first_answer(sg_fr) == NULL) {
1325 	if (SgFr_state(sg_fr) < complete) {