Extra line spacing: (This setting may be removed in the future.) Lets you add additional spacing between each line. A particular use for this
was to add one extra pixel between lines if you disliked the way selection boxes overlapped (producing a thin line between selected items) in some versions of Windows; however, there is now an explicit option for that under
Color Blending, independent of spacing and padding. If you add more than one pixel of spacing, you will start to get gaps between items where clicking them is like clicking the folder background. Unlike padding, the spacing value does not change when you move to different DPIs.