Display of border lines via keyboard shortcut

With a simple keyboard shortcut, you can quickly switch between showing or hiding borders in steps of 3.

Select one or more items and press [Ctrl] [E] on the keyboard.

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[Ctrl] [E] - 1 time - also show hidden borders (can be very heavy on a large screen!)

[Ctrl] [E] - 2 times - hide all visible and hidden borders.

[Ctrl] [E] - 3 times - show all visible borders again.

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