Logo Squaring
When a logo has been cropped down to its "mark," the resulting image is often wider than it is tall. This can help save space in end credits.
Sometimes, though, a logo just looks funny without some space around it:
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You could use Bottom Margin to add a line or two of space before and after the logo block. But sometimes the ideal spacing places the cropped logo inside a perfect square:
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Toggling Squaring On does this. It adds space above and below wide logos, so the mark sits in an area exactly as tall as it is wide.
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You'll see the Squaring option when you edit a non-square logo.