File mtrack.conf of Package x11-input-mtrack

Section "InputClass"
    MatchIsTouchpad "on"
    Identifier      "Touchpads"
    MatchDevicePath "/dev/input/event*"
    Driver          "mtrack"
    # Default for some options
    # Option "ButtonIntegrated"   "true"
    # Option "ClickFinger1"   "3"
    # Option "ClickFinger2"   "2"
    # Option "ClickFinger3"   "0"
    # Option "ThumbSize"      "25"
    # Option "PalmSize"       "40"
    # Option "ClickTime"      "50"
    # Option "ScrollDistance" "150"
EndSection