private void writeDegreesofFreedom(XmlWriter xml)
{
xml.WriteAttributeString("UX", "Yes");
xml.WriteAttributeString("UY", "Yes");
xml.WriteAttributeString("UZ", "Yes");
xml.WriteAttributeString("RX", "Yes");
xml.WriteAttributeString("RY", "Yes");
xml.WriteAttributeString("RZ", "Yes");
}