SCHEMA Class_of_activity_structure_arm;
USE FROM
Class_of_activity_arm;
-- ISO/TS 10303-1071
USE FROM
Class_of_connection_of_activity_arm;
-- ISO/TS 10303-1172
USE FROM
Class_of_composition_of_activity_arm;
-- ISO/TS 10303-1171
USE FROM
Class_of_involvement_in_activity_arm;
-- ISO/TS 10303-1173
END_SCHEMA; -- Class_of_activity_structure_arm