etl::handle<ValueNode_Animated> parse_animated(xmlpp::Element *node,Canvas::Handle canvas);
etl::handle<ValueNode_Subtract> parse_subtract(xmlpp::Element *node,Canvas::Handle canvas);
etl::handle<LinkableValueNode> parse_linkable_value_node(xmlpp::Element *node,Canvas::Handle canvas);
etl::handle<ValueNode_Animated> parse_animated(xmlpp::Element *node,Canvas::Handle canvas);
etl::handle<ValueNode_Subtract> parse_subtract(xmlpp::Element *node,Canvas::Handle canvas);
etl::handle<LinkableValueNode> parse_linkable_value_node(xmlpp::Element *node,Canvas::Handle canvas);