Section "InputDevice"
  Driver        "wacom"
  Identifier    "stylus"
    Option        "TopX" "100"
    Option        "TopY" "100"
  Option        "Device"        "/dev/input/wacom" 
  Option        "Type"          "stylus"
EndSection
Section "InputDevice"
  Driver        "wacom"
  Identifier    "eraser"
    Option        "TopX" "100"
    Option        "TopY" "100"
  Option        "Device"        "/dev/input/wacom" 
  Option        "Type"          "eraser"
EndSection
Section "InputDevice"
  Driver        "wacom"
  Identifier    "cursor"
    Option        "TopX" "100"
    Option        "TopY" "100"
  Option        "Device"        "/dev/input/wacom"
  Option        "Type"          "cursor"
EndSection