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when you enter the tab. When you leave this tab, the image in the After
position becomes the updated image on all screens.
2. (Optional.) Adjust the values for Brightness, Contrast, and Saturation
by dragging their sliders or by entering an integer from -100 to +100
into the field next to the slider; the numbers represent percentage
values.
3. (Optional.) Adjust the values Cyan/Red, Magenta/Green, and Yellow/
Blue by dragging their sliders or by entering an integer from -100 to