XSTEP
<action type="walk(Agent)">
<seq>
<par speed="fast">
<gesture type="turn" actor="Agent" part="r_shoulder" dir="back_down2"/>
...
</par>
<par speed="fast">
...
<gesture type="turn" actor="Agent" part="r_hip" dir="back_down2"/>
</par>
</seq>
</action>
