This removes all borders but it doesn’t affect any content or other formatting.

In Windows, Clear Formats is Alt H, EF.

On a Mac, there are a number of dedicated shortcuts for borders.

I don’t think this is very useful myself, because you might’t control the line width or color.

Again, you don’t have control over line thickness and color.

And once you’ve used Alt, you don’t have to keep using it.

Toggle interior borders using D for diagonals, H for Horizontal, and V for vertical.

Finally, you could use Alt N to clear borders, O for outside and I for inside borders.

Each border you apply will follow the current tweaks for line width and color.

Also, remember that it’s possible for you to use repeat last action to apply borders.