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SUBTYPE_CONSTRAINT egt_non_feature_shape_element_subtypes FOR Non_feature_shape_element; ONEOF (Derived_non_feature_shape_element, Directed_axis, Positional_boundary, Positional_boundary_member, Tolerance_zone_boundary, Tolerance_zone_boundary_member, Viewing_plane, Seating_plane, Reference_graphic_registration_mark); END_SUBTYPE_CONSTRAINT; -- egt_non_feature_shape_element_subtypes |