Extensible select and enumeration types

and their elements in schema Specification_control_arm taking into account BASED_ON types


 approval_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Certification
          Contract

 breakdown_item - EXTENSIBLE SELECT
          Breakdown_element_definition
          Breakdown_element_usage

 certification_item - EXTENSIBLE GENERIC_ENTITY SELECT

 configured_item_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Alternative_solution

 constructive_element_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Axis_placement
          Curve
          point_select
          Surface

 contract_item - EXTENSIBLE SELECT

 date_or_date_time_item - EXTENSIBLE SELECT
          Certification
          Contract
          Organization_or_person_in_organization_assignment
          Security_classification_assignment

 effectivity_item - EXTENSIBLE SELECT
          Configuration
          Replaced_usage_relationship

 event_item - EXTENSIBLE GENERIC_ENTITY SELECT

 extended_value_with_unit - EXTENSIBLE SELECT
          Value_limit
          Value_range
          Value_with_unit

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          File

 groupable_item - EXTENSIBLE GENERIC_ENTITY SELECT

 identification_item - EXTENSIBLE SELECT
          Approval_status
          Contract
          Organization
          Product_class
          Requirement
          Requirement_version
          Security_classification

 instance_usage_context_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Collected_item_association
          Solution_element

 measure_value - EXTENSIBLE SELECT
          any_number_value
          any_string_value
          length_measure
          plane_angle_measure

 organization_or_person_in_organization_item - EXTENSIBLE SELECT
          Contract
          Identification_assignment
          Security_classification_assignment

 point_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Cartesian_point
          Point_on_curve
          Point_on_surface

 product_item - EXTENSIBLE SELECT
          Product_view_definition
          View_definition_usage

 project_item - EXTENSIBLE SELECT

 property_assignment_select - EXTENSIBLE SELECT
          Breakdown_element_realization
          Breakdown_element_usage

 represented_definition - EXTENSIBLE SELECT
          Assigned_property
          Independent_property

 security_classification_item - EXTENSIBLE SELECT

 string_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Approval
          Approval_relationship
          Approval_status
          Certification
          Contract
          Date_or_date_time_assignment
          Identification_assignment
          Organization_relationship
          Person_in_organization
          Project
          Project_assignment
          Project_relationship

 template_definition_select - EXTENSIBLE SELECT
          Geometric_model