The Sim locations are divided into Key and non-Key locations.
Key locations are listed in an internal matrix linking adjacent locations into valid timetable paths and any timetable will only validate if Key locations are entered in the right order.
Entering trains that have invalid timetables will not enter the Sim.
Non-Key locations can be entered into a timetable in any order and will not invalidate the timetable, though you may get odd results when running a train!
The Key Locations are where activities such as join, divide, next working can take place.
Last edited by GeoffM on 15/09/2016 at 03:00