<layers>

<visual>

  <param name="opacity" type="anim">

      <duration>1.0</duration>

      <style>linear</style>

      <keyframe at="0">0</keyframe>

      <keyframe at="0.2">0</keyframe>

      <keyframe at="0.5">1</keyframe>

  </param>

	<param name="rotation_angle" type="anim">

            <duration>0.5</duration>

            <style>outquad</style>

            <keyframe at="0">-90</keyframe>

            <keyframe at="1">0</keyframe>

	</param>

	<param name="rotation_origin_x" ref="visual.width">0.5</param>

	<param name="rotation_origin_y" ref="visual.height">0.5</param>

	<param name="rotation_axis_x" type="anim">0</param>

	<param name="rotation_axis_y" type="anim">0</param>

	<param name="rotation_axis_z" type="anim">1</param>        

</visual>

</layers>