The sSpotDiameter box contains a value that specifies a special value used by the Universal Printer Driver to rasterize graphic data and compensate for overlapping pixels. The value entered will affect the “lightness” or “darkness” of printed raster-graphic images. The user can adjust this setting through Control Panel. Double-click on the Printers icon in Control Panel, choose the Setup button in the Printers dialog box, and choose the Options button to display the Options dialog box. The user can adjust the intensity of printed output using the Intensity scroll bar in the Options dialog box. The following lists spot diameters for common resolutions supported by 9-pin, 24-pin, and ink-jet printers.
| Printer | Resolution | Diameter |
| 9-pin | 240 x 144 | 170 |
| 120 x 144 | 140 | |
| 120 x 100 | 100 | |
| 24-pin | 360 x 180 | 170 |
| 180 x 180 | 140 | |
| 120 x 180 | 120 | |
| Ink-Jet | 360 x 360 | 100 |
| 180 x 180 | 100 | |
| 120 x 180 | 100 |
For the Diconix 150 Plus printer, the sSpotDiameter box contains the value 100.
For the HP LaserJet IIP printer, the sSpotDiameter box contains the value 100.