Ahh, I see what you are looking at now. The scaling on the second tab is a distortion applied to the width of the characters. In the same area, the spacing is an adjustment of the spaces between letters. These settings can be fiddled but any variation from the default comes at the expense of legibility. So resetting them to default is a good thing to do.

Your styles should already be set to 100% scaling so you really only need to reset the font attributes to the style and hence all the individual settings, including scaling and spacing, fix themselves. This avoids the need to micromanage all of the font aspects individually and allows you to control the entire document's look at the style level.

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Andrew Lockton
Chrysalis Design, Melbourne Australia