7. The system of claim 6 , where a state document is an extensible markup language (XML) document.
7. The system of claim 6 , where a state document is an extensible markup language (XML) document. 8. The system of claim 7 , where the differences document is an XML document, and where the tags are XML tags in the differences document that include elements describing the content differences by notating a change and a previous value.