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:
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:
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.
You'll see the Squaring option when you edit a non-square logo.