Extensible select and enumeration types

and their elements in schema Dimension_tolerance_arm taking into account BASED_ON types


 closed_curve - EXTENSIBLE GENERIC_ENTITY SELECT
          Circle
          Closed_composite_curve

 constructive_element_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Axis_placement
          Curve
          point_select
          Surface

 documented_element_select - EXTENSIBLE SELECT
          Externally_defined_size_dimension

 element_with_dimension_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Shape_element

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Document_definition
          File

 identification_item - EXTENSIBLE SELECT

 measure_value - EXTENSIBLE SELECT
          any_number_value
          any_string_value
          length_measure
          plane_angle_measure

 placed_element_select - EXTENSIBLE SELECT
          constructive_element_select
          Derived_geometry
          element_with_dimension_select

 point_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Cartesian_point
          Point_on_curve
          Point_on_surface