Dell IN1940MW Display - Manual (Page 34)

Display Settings Use the Display Settings to adjust image.
Aspect Ratio Adjust the image ratio to Wide 16:10, 5:4 or 4:3.
Horizontal Position
Use or to adjust the image left or right. Minimum is '0' (-). Maximum is '100' (+).
Vertical Position
Use or to adjust the image up or down. Minimum is '0' (-). Maximum is '100' (+).
NOTE: Horizontal Position and Vertical Position adjustments are only available for "VGA" input.
Sharpness
This feature can make the image look sharper or softer. Use or to adjust the sharpness from '0' to '100'.
Pixel Clock The Phase and Pixel Clock adjustments allow you to adjust your monitor to your preference.
Use or to adjust for best image quality.