static Rule()
{
predefinedRulePropertiesDict.Add(new Attribute("parser"));
predefinedRulePropertiesDict.Add(new Attribute("text"));
predefinedRulePropertiesDict.Add(new Attribute("start"));
predefinedRulePropertiesDict.Add(new Attribute("stop"));
predefinedRulePropertiesDict.Add(new Attribute("ctx"));
}