I have an HP dv3 laptop with a synaptics touchpad. Swiping the left edge of the touch pad causes programs which have a zoom capability to zoom in and out. There is no documentation from HP or Synaptics or Microsoft that I have been able to find which even acknowledges that this feature even exists. I would like to turn the feature off because I keep activating it by accident, but I cannot find a setting anywhere. Perhaps there is a registry setting I can change?