{ Xref deck = mmt$server_state.

  TYPE
    mmt$server_state = (mmc$ss_queue_initialized, mmc$ss_waiting, mmc$ss_reading_from_disk,
          mmc$ss_read_disk_error, mmc$ss_writing_to_esm, mmc$ss_write_esm_error, mmc$ss_reading_from_esm,
          mmc$ss_read_esm_error, mmc$ss_writing_to_disk, mmc$ss_write_disk_error,
          mmc$ss_sending_write_response, mmc$ss_sending_write_resp_error, mmc$ss_allocating_space,
          mmc$ss_allocate_space_error, mmc$ss_send_allocate_response, mmc$ss_send_allocate_resp_error,
          mmc$ss_reading_pages_ahead);
