• Check the history. Revision history of every document storage system to prevent the old user documents as a single document, the history is not able to remove documents from the system to work.
• background check documents Revision history of every document storage system prevents the user to use such old documents, see document history alone. But can not take the document from the system to work.
Monitoring records, stored records every Revision system prevent the document user old to use, such as view history documents only. But can't bring the documents from the system to use .