
  TYPE
    cmt$element_type = (cmc$central_memory_element,
          cmc$central_processor_element, cmc$controller_element,
          cmc$data_channel_element, cmc$channel_adapter_element,
          cmc$iou_element, cmc$mainframe_element, cmc$pem_element,
          cmc$pp_element, cmc$storage_device_element,
          cmc$external_processor_element, cmc$communications_element);

