>>6190
They give you a map like this, and the main area you can drill as you want, but when you get into the dark areas, an alarm goes off and the machine halts. It operates by some kind of GPS but it also maintains an internal map so it works even if you lose connection (this happens deep inside). Once in the "number control area", the vehicle will give directions on the screen, these are taken from the storage media which is inserted into the control panel as you start mining. It's been prepared by the overseer based on the quality of the rock and what kind of tunnel you are building, to avoid it caving in. You then follow the directions and enter the numbers exactly to take it step by step.