anchor.diff:            Enable sensitivity and speed configuration for trackpoints.
           '';
         };
  -  
  +
         sensitivity = mkOption {
           default = 128;
           example = 255;
  
positive.code:           Enable scrolling while holding the middle mouse button.
          '';
        };
        
      };
  
    };
  
negative.code:         ''
            Section "InputClass"
              Identifier "Trackpoint Wheel Emulation"
              MatchProduct "Elantech PS/2 TrackPoint|TPPS/2 IBM TrackPoint|DualPoint Stick|Synaptics Inc. Composite TouchPad / TrackPoint|ThinkPad USB Keyboard with TrackPoint|USB Trackpoint pointing device|Composite TouchPad / TrackPoint"
              MatchDevicePath "/dev/input/event*"
              Option "EmulateWheel" "true"
              Option "EmulateWheelButton" "2"
  