Section "InputClass"
    Identifier "Clickpad"
    MatchIsTouchpad "on"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
    # Synaptics options come here.
    Option "TapButton1" "1"
    Option "TapButton2" "3"
    Option "TapButton3" "2"
    Option "SoftButtonAreas" "60% 0 0 20% 40% 60% 0 20%"
    Option "AreaTopEdge"          "20%"
    Option "SecondarySoftButtonAreas" "60% 0 90% 0 40% 60% 90% 0"
    Option "AreaBottomEdge"       "90%"
EndSection

Section "InputClass"
    Identifier   "TrackPoint"
    MatchProduct "TrackPoint"
    MatchDriver  "evdev"
    Option       "EmulateWheel"       "1"
    Option       "EmulateWheelButton" "2"
    Option       "XAxisMapping"       "6 7"
EndSection

/etc/X11/xorg.conf.d/90-evdev-trackpoint.conf