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