struct btr_node *btr_new_node(char *name, struct btr_node *parent);
void btr_del_node(struct btr_node *btrn);
void btr_add_output(char *buf, size_t size, struct btr_node *btrn);
struct btr_node *btr_new_node(char *name, struct btr_node *parent);
void btr_del_node(struct btr_node *btrn);
void btr_add_output(char *buf, size_t size, struct btr_node *btrn);