3. The method of claim 1 , wherein the content processing rule is a synchronization rule specifying metadata maintained by the CMS to synchronize with metadata contained in documents of the document type whenever documents of the document type are checked-in to or checked-out from the CMS.
3. The method of claim 1 , wherein the content processing rule is a synchronization rule specifying metadata maintained by the CMS to synchronize with metadata contained in documents of the document type whenever documents of the document type are checked-in to or checked-out from the CMS. 4. The method of claim 3 , wherein the metadata contained in documents of the document type comprises an XML attribute.