Driver command. It basically couples the train to the first available vehicle facing a specified trackmark lying on a track between two junctions. If no vehicle exists between the trackmark and the junction facing the trackmark or the track ends without a vehicle and junction, the schedule will stop at this command. Note that the trackmark direction determines the search path to the first available vehicle on the track.
NOTE: Same as CoupleToVFacingTrackmark command in TRS2004