Key 0 : Opens camera shortcuts, use your mouse to pick one from the gizmo, to the right are External Cameras, to the left are Internal Cameras, ESC takes you back to the main gizmo
Keys CTRL + 0 : Camera Reset
Key 5 : Passenger view (probably not implemented yet?)
Keys CTRL + = : Switch to next cab in m.u. consist, but not into the DPU's/helpers?
Keys CTRL + 1 : Toggle floating objective marker
Keys CTRL + 2 : Toggle floating speed limit marker
Keys CTRL + 3 : Toggle floating next signal marker
Keys CTRL + 4 : Toggle HUD markers (repeated presses)
Key F1 : Toggle HUD
Key F3 : Toggle FPS/millisecond per rendered frame