• attribute : alglib::graph::edge_t< vertex_t, attr_t >
• data : BST_node< value_type >
• from : alglib::graph::edge_t< vertex_t, attr_t >
• lt_subtree : BST_node< value_type >
• parent : BST_node< value_type > , Node< value_t >
• root : Tree< value_t >
• rt_subtree : BST_node< value_type >
• subtrees : Node< value_t >
• to : alglib::graph::edge_t< vertex_t, attr_t >
• u : edge_t
• v : edge_t
• val : Node< value_t >
• wt : edge_t