Please add an “auto hide” option for the main application toolbar similar to what is available in MS Word (for both top and left toolbar locations).
Using this option, the application toolbar would remain hidden until a mouse cursor is placed at the top or left edge of the screen depending on the location the user has chosen for the application toolbar. Once the application toolbar appears, clicking anywhere away from the toolbar could hide it.
A corresponding keyboard shortcut (ideally, a single key) could serve as a toggle button to make the toolbar appear or disappear if the “auto hide” option is enabled. (MS Word uses the “Alt” key for this purpose).