To protect a secret document, a cover sheet is attached to it. The cover sheet identifies the document type and department it belongs to, and it is meant to cover the title page of the file. There are different types of cover sheets for classified documents, depending on the level of classification. For example, a Top Secret document requires an SF-703 cover sheet, a Secret document requires an SF-704 cover sheet, and a Confidential document requires an SF-705 cover sheet. The SF-704 cover sheet is used to protect Secret classified information from inadvertent disclosure and to alert observers that the document is classified.