Shortcut Menu Office Button: The new Office Button is shown below. The Office Button provides functionality common to all Office applications, including opening, saving, printing, and closing a file. Commands are listed on the left, and recently opened files appear on the right side. As you click on the various commands, you will be given related options.
Main article: Such files are saved using an extra X letter in their extension. However, it can still save documents in the old format, which is compatible with previous versions.