synclient.conf

# /etc/X11/xorg.conf.d/50-synaptics.conf
Section "InputClass"
    Identifier "touchpad"
    Driver "synaptics"
    MatchIsTouchpad "on"
        Option "HorizEdgeScroll" "on"
        Option "TapButton1" "1"
        Option "TapButton2" "2"
EndSection

# /usr/share/X11/xorg.conf.d/70-synaptics-options.conf 
# output from synclient
#
# when # fingers are tapped, emulate mouse press Y
# TapButtonX=Y
# Y1 = left click
# Y2 = middle mouse
# Y3 = right click
# TOSET:
# TapButton1=1
# TapButton2=2
Parameter settings:
    LeftEdge                = 117
    RightEdge               = 2823
    TopEdge                 = 75
    BottomEdge              = 1325
    FingerLow               = 1
    FingerHigh              = 1
    MaxTapTime              = 180
    MaxTapMove              = 143
    MaxDoubleTapTime        = 100
    SingleTapTimeout        = 180
    ClickTime               = 100
    EmulateMidButtonTime    = 75
    EmulateTwoFingerMinZ    = 282
    EmulateTwoFingerMinW    = 7
    VertScrollDelta         = 65
    HorizScrollDelta        = 65
    VertEdgeScroll          = 0
    HorizEdgeScroll         = 1
    CornerCoasting          = 0
    VertTwoFingerScroll     = 1
    HorizTwoFingerScroll    = 0
    MinSpeed                = 1
    MaxSpeed                = 1.75
    AccelFactor             = 0.0614251
    TouchpadOff             = 0
    LockedDrags             = 0
    LockedDragTimeout       = 5000
    RTCornerButton          = 0
    RBCornerButton          = 0
    LTCornerButton          = 0
    LBCornerButton          = 0
    TapButton1              = 1
    TapButton2              = 2
    TapButton3              = 0
    ClickFinger1            = 1
    ClickFinger2            = 1
    ClickFinger3            = 1
    CircularScrolling       = 0
    CircScrollDelta         = 0.1
    CircScrollTrigger       = 0
    CircularPad             = 0
    PalmDetect              = 0
    PalmMinWidth            = 10
    PalmMinZ                = 200
    CoastingSpeed           = 20
    CoastingFriction        = 50
    PressureMotionMinZ      = 30
    PressureMotionMaxZ      = 160
    PressureMotionMinFactor = 1
    PressureMotionMaxFactor = 1
    GrabEventDevice         = 0
    TapAndDragGesture       = 1
    AreaLeftEdge            = 0
    AreaRightEdge           = 0
    AreaTopEdge             = 0
    AreaBottomEdge          = 0
    HorizHysteresis         = 16
    VertHysteresis          = 16
    ClickPad                = 1
    RightButtonAreaLeft     = 0
    RightButtonAreaRight    = 0
    RightButtonAreaTop      = 0
    RightButtonAreaBottom   = 0
    MiddleButtonAreaLeft    = 0
    MiddleButtonAreaRight   = 0
    MiddleButtonAreaTop     = 0
    MiddleButtonAreaBottom  = 0