private void writeCanguroVariables(XmlWriter xml)
{
xml.WriteStartElement("T-Treu_Options");
xml.WriteAttributeString("ActiveLayer", model.ActiveLayer.Id.ToString());
xml.WriteAttributeString("ActiveLoadCase", model.ActiveLoadCase.Name);
xml.WriteAttributeString("UnitSystem", model.UnitSystem.GetType().ToString());
xml.WriteAttributeString("Layout", ((byte)Canguro.View.GraphicViewManager.Instance.Layout).ToString());
writeViewOptions(xml);
xml.WriteEndElement();
}