Kids playing at the keyboard while Train Sim World was running did something and the HUD (the one in the lower right hand corner of the screen) disappeared and was replaced by something that looks like a compass. I've looked everywhere and can't figure out how to undo whatever made this happen. Is there a way to reset TSW to the original settings?
The F1 key can be used to turn the entire HUD on or off. But you might also want to try Ctrl + 5, as that only changes the speedometer and nothing else. Though its a bit hard to accidentally hit Ctrl and 5 at the same time, so try F1 first.