In our fleet of A340's, only one has track up. This you cannot select and comes with the software. Others are all Hdg up. Unusual to have one black sheep in the fleet when they all come from the factory.
Track up:-green line in twelve o' clock position on ND with nose off centre due to drift. (if drfit)
Hdg up: Heading in twelve o' clock with green line running off centre due to drift.(if drift)