 TYPE
    cmt$subsystem_io_request_id = record
      system_supplied: cmt$io_completion_queue_index,
      user_supplied: cmt$user_io_identification,
    recend;

?? PUSH (LISTEXT := ON) ??
*copyc cmt$io_completion_queue_index
*copyc cmt$user_io_identification
?? POP ??
