2.4 Default gamma for the display The default target gamma value for the display. Common values are 1.8, 2.2 and 2.4. 6500 Default display target whitepoint The default target whitepoint in Kelvin for display calibration, with 0 meaning display native. Common values are 6500 for D65 and 5000 for D50. 400 Delay between sample intervals This is the delay between setting the sample color and asking the measuring instrument to take a sample. It is required because both the graphics driver and the display itself introduce latency. 'http://www.hughski.com/profile-store.php' Web service profile upload URI The URI of the web service that allows the calibration tools to upload a specific profile to the Internet.