Eizo FlexScan L985EX User Manual page 29

English
3.
Set the brightness of the black area surrounding the displayed image.
Set the <Border Intensity>.
In the <Enlarge> mode or <Full Screen> mode, the outer area (border) is usually
black.
Select <Border Intensity> in the <Others> menu and adjust by using the right and
left buttons.
Border
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4. ADJUSTMENT