MAGic 10.0 User's Guide (PDF) - Freedom Scientific

Color
Select a color for the border that separates the two parts of the split
screen.
Thickness
Move the slider bar to increase or decrease the thickness of the divider
that separates the two parts of the split screen. The bars above the
slider indicate the widths you can select.
Position
Select where you want the magnified area to appear on the screen.
Size
Select how much of the screen you want the magnified area occupy. For
example, if you select Quarter, the magnified area occupies 25% of the
available screen area.
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