<element name="capsule" required="0">
<description>Capsule shape</description>
<element name="radius" type="double" default="0.5" required="1">
<description>Radius of the capsule</description>
</element>
<element name="length" type="double" default="1" required="1">
<description>Length of the cylindrical portion of the capsule along the z axis</description>
</element>
</element>