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

Lens
The Lens tab allows you to define properties for the Lens view. Lens
view opens a small rectangular window, which is magnified, while
leaving the remaining desktop unmagnified. The lens moves around the
screen as you move your mouse or when the focus changes.
Color
Select a color for the border of your lens.
Thickness
Move the slider bar to increase or decrease the thickness of the lens
border. The bars above the slider indicate the widths you can select.
Overlay
The Overlay tab allows you to define properties for the Overlay view.
Overlay view creates a magnified window in the corner of the screen,
while the rest of the screen remains unmagnified. This is similar to the
Lens view, but the Overlay view does not move around the screen.
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