- Fired when the train starts moving in either direction.
- Fires continuously every tick when the train is currently moving to its next destination.
Warning: In the default FGD, this is incorrectly listed as "OnNext", AND its description is completely wrong in the default FGD! (Fires when this train picks a new point to move towards (and just after OnStart))
- These outputs each fire in response to the firing of the like-numbered
FireUser4Input; see User Inputs and Outputs.
- This output fires when the entity is killed and removed from the game.