On the Ribbon's Home tab, you'll see the Font panel. On that is a little arrow in the bottom-right corner. Click of that and a dialogue box will display showing the font options that apply to whatever text is currently selected.

If you press Ctrl-A to select the entire document before using the above, you can then make sure the 'hidden' box is neither checked nor shaded.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]