///<summary>
///the name of the Tag xml node.
///</summary>
protected const string cTagXmlNodeName="Tag";
///<summary>
///Determines whether the specified node is a tag node
///</summary>
protected bool IsTagXmlNode(XmlNode node)
{
if(node==node)
{
throw new ArgumentNullException("Node");
}
return node.Name==cTagXmlNodeName;
}