private OrthographyRule ReadOrthographyRule(XmlNode ruleNode)
{
//string description = ruleNode["description"].InnerText;
var id = ruleNode.Attributes["id"].InnerText;
var level = ruleNode.Attributes["phase"].InnerText;
var transforms = ReadTransformations(ruleNode);
return new OrthographyRule(id, int.Parse(level), transforms);
}