Dell 2200MP Safety Instructions page 20

This mode allows for manual adjustment of red, green, and blue color settings.
Modifying these values will automatically change the color temperature to "user".
Keystone
Adjusts image distortion caused by tilting the projector. (&plusmn16 degrees)
Aspect Ratio
Select this function to fit 16:9U, 1:1, 16:9, 4:3 aspect ratio. In order to use the 1:1
aspect ratio, the input must be a computer signal (through VGA cable) of resolution less
than SVGA (800 x 600), component 576p/ 480i / 480p, S-Video, or Video (composite).
If the input signal is a computer signal greater than SVGA or component 1080i / 720p,
only 16:9, 16:9U or 4:3 aspect ratio will be available. When an icon is selected, the
color of the icon will change to dark blue.
16:9U The input source will be displayed in wide screen mode (16:9) without scaling.
Some pixels will be truncated accordingly.
1:1 The input source will be displayed without scaling.
16:9 The input source will be displayed in wide screen mode (16:9) without scaling.
The source will be scaled to fit the width of the screen.
4:3 The input source will be scaled to fit the screen.
Video Mode
Select this function to optimize the display image for home use (Movie Mode),
conference use (PC Mode), standard color use (sRGB), or as user preferable settings
(User Mode). When an icon is selected, the color of the icon will change to dark blue.
The default setting is PC Mode. Adjusting the settings of White Intensity or Degamma
tab will select User Mode automatically.
White Intensity
White Intensity can be adjusted between 0 and 10.
Setting 10 will maximize the brightness.
Setting 0 will maximize color reproduction quality.
Degamma