Follow below quick Tip to hide / unhide the ribbon bar.
Press Control + F1 and ribbon disappears and press again to reappear ribbon.
You can also have it disappear so it will come back with a single click on any tab name. To do this, double click a tab name and the ribbon disappears.
Single click a tab name and it reappears – click again on the tab or in the document, and it disappears. Repeat until you’re tired of the magic! Double click or Control + F1 to go back to how it is.
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