Do tasks quickly without using the mouse by pressing a few keys—no matter where you are in an Office program. You can get to every command on the ribbon by using an access key—usually by pressing two to four keys.
You see the little boxes called KeyTips over each command available in the current view.
Tip To cancel the action you’re taking and hide the KeyTips, press and release the ALT key.
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Another way to use the keyboard to work with the ribbon is to move the focus among the tabs and commands until you find the feature you want to use. The following shows some ways to move the keyboard focus without using the mouse.