Input.mouseScrollDelta - what is it?

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1

It has no comments in the docs - I assume it’s for fancy mouse scroll wheels and the like that tilt as well as spin as it is a Vector3

please add a description

2

E.g. the unit of the wheel delta?

3 
    public static float ScrollWheel { get { return Input.GetAxis("Mouse ScrollWheel"); } }
    public static float ScrollWheel { get { return Input.mouseScrollDelta.y / 10; } }

Both methods return the same value, but the second method is slightly more efficient.