<keybind key="W-Up">
      <action name="Maximize"/>
    </keybind>
    <keybind key="W-Down">
      <action name="Unmaximize"/>
    </keybind>
    <keybind key="W-Left">
      <action name="Unmaximize"/>
      <action name="MoveResizeTo">
        <x>0</x>
        <y>0</y>
        <width>50%</width>
        <height>100%</height>
      </action>
    </keybind>
    <keybind key="W-Right">
      <action name="Unmaximize"/>
      <action name="MoveResizeTo">
        <x>-0</x>
        <y>0</y>
        <width>50%</width>
        <height>100%</height>
      </action>
    </keybind>