<fxlayout>
  <page name="Linear Gradient">
    <control>startPoint</control>
    <control>endPoint</control>
    <control>startColor</control>
    <control>endColor</control>
    <rgb_link_button>startColor endColor</rgb_link_button>
    <control>curveType</control>
<separator label="Distortion Wave"/>
     <control>wave_amplitude</control>
     <control>wave_frequency</control>
     <control>wave_phase</control>
  </page>
</fxlayout>