As you create, edit, and manage documents, you might not always want everyone who has access to the drive to be able to open and modify all documents. Word 2010 offers a variety of ways of protecting documents. They break down into these areas:
• Restricting access to the document entirely—This includes using Windows file encryption, setting network access permissions, and placing a password on the file in Word.
• Restricting what users can do to a file—This includes restricting style usage and editing and preventing users from turning off revision marks, as well as setting a document to be read-only.
• Marking a document as finalized—You can mark a document as Final and ...