I have a Logitech Marble Mouse trackball (4-button), I would like to be able to assign the scrolling function to additional mouse/trackball buttons. Before this feature was available in kde (Re-Bind Additional Mouse Buttons) , it was done via input-remapper ` "mapping": { "1,275,1": [ "wheel(down, 10)", "mouse" ], "1,276,1": [ "wheel(up, 10)", "mouse" ] } } `