<layers>
  <visual>
    <param name="scale_x" type="anim">
        <duration>0.3</duration>
        <style>outback</style>
        <keyframe at="0.0">0.0</keyframe>
        <keyframe at="0.5">0.5</keyframe>
        <keyframe at="1.0">1.0</keyframe>
    </param>
    <param name="scale_origin_x" ref="visual.right">1</param>
  </visual>
</layers>