Once the simulation has been set up in pre-start mode, clicking the play button (or pressing r) will run the simulation. From this point on, the pause button (or p key) can be used to [[Railway Operation/Tutorial#Pausing the Simulation|pause the simulation]]. Trains are shown as their four character headcode (excluding prefix), with the first character in the direction of travel coloured red. | Once the simulation has been set up in pre-start mode, clicking the play button (or pressing r) will run the simulation. From this point on, the pause button (or p key) can be used to [[Railway Operation/Tutorial#Pausing the Simulation|pause the simulation]]. Trains are shown as their four character headcode (excluding prefix), with the first character in the direction of travel coloured red. |