?? LEFT := 1, RIGHT := 110 ??

  TYPE
    nlt$timer = record
      CASE selected: boolean OF
      = TRUE =
        count: nlt$timer_count,
        expiration_time: integer,
      CASEND,
    recend,

    nlt$timer_count = 0 .. 255;

  CONST
    nlc$sap_timer_duration = (2 * 60 * 1000 * 1000);    {Time durations are microseconds.}
