Help:Driver Onscreen Help
From TrainzOnline
Click this Question button to turn on and off the onscreen help about junction/turnout/point directions, name of junction, etc. Novice users of TRAINZ should keep this turned on while learning how to drive or when driving an unfamiliar route. Think of this as a Heads-Up Display.
This is NOT the same function as the Question button for in-game help that appears on the upper right-hand corner.