So what do you do when it's time to "declassify" those documents? Choose File, Permission, Unrestricted Access. Your document is now open, with no permission restrictions. Anyone with network, SharePoint, or email access to your file can open it, make changes, copy it, print it, or save it to a new file. But remember that if you want to open your document for public use, you had better do it before your specified expiration date arrives!