Extensible select and enumeration types

and their elements in schema PRODUCTION_RULE_XIM taking into account BASED_ON types


 action_items - EXTENSIBLE GENERIC_ENTITY SELECT
          product_definition_formation

 built_in_functions - EXTENSIBLE ENUMERATION
          attr_val

 characterized_product_definition - EXTENSIBLE SELECT
          product_definition
          product_definition_relationship

 constants - EXTENSIBLE SELECT
          count_measure
          descriptive_measure
          logical_representation_item

 date_and_time_item - EXTENSIBLE SELECT
          rule_action

 date_item - EXTENSIBLE SELECT

 document_reference_item - EXTENSIBLE SELECT
          configuration_item
          product
          product_definition
          product_definition_formation
          property_value_representation
          representation
          rule_set
          rule_set_armx

 expression_syntax - EXTENSIBLE ENUMERATION
          express

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          document_definition
          document_file
          external_source
          externally_defined_class
          externally_defined_general_property
          file
          product_definition

 externally_versioned_item - EXTENSIBLE GENERIC_ENTITY SELECT
          externally_defined_general_property

 identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          document_file
          rule_set

 item_identified_representation_usage_definition - EXTENSIBLE GENERIC_ENTITY SELECT
          represented_definition

 name_item - EXTENSIBLE GENERIC_ENTITY SELECT
          external_class_library

 organization_item - EXTENSIBLE SELECT
          class
          rule_action

 person_and_organization_item - EXTENSIBLE SELECT
          rule_action