- A light pattern asked for in a recording made before the lamps were
written is checked as the signal it shows, as before.
- Whether the couplings were written is told by the format (the
movement in the cab samples), not by there being any: a recording
where every train is a single vehicle has none, and the user going
over to another vehicle left the timetable shown.
- The 2 m a train may stand off the platform is at each end, not for
both together.
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