steer.inputBinding — the 'Steer' control. Every device class is bound. A control missing one is refused at activation, naming the class it lacks. One axis2 for the whole airframe: on the launcher it trims heading (x) and elevation (y); in the air it banks (x) and pitches (y). Stick FORWARD (+y) pushes the nose DOWN and pull-back climbs, on every device at once — the convention the how-to card states. The shaping is written once here, in the control's own unit, so the pad stick, the keys and the finger all arrive conditioned the same way: a radial deadzone kills a resting stick's drift, and 90 ms of smoothing keeps a keyboard's instant full deflection from snapping the toy about.