Wacom tablet

<?xml version="1.0" encoding="UTF-8"?> <!-- -*- SGML -*- -->

<deviceinfo version="0.2">

  <device>
    <match key="input.x11_driver" contains="wacom">
      <match key="input.x11_options.Type" contains="stylus">
        <merge key="input.x11_options.Twinview" type="string">horizontal</merge>
      </match>
    </match>
  </device>

</deviceinfo>

Desktop configuration