
  TYPE
    avt$date_time = record
      date_specified: boolean,
      time_specified: boolean,
      case range: boolean of
      = TRUE =
        starting_value: ost$date_time,
        ending_value: ost$date_time,
      = FALSE =
        value: ost$date_time,
      casend,
    recend;

*copyc ost$date_time
