Topic summary
Windows Longhorn
Extracted from the Wikipedia article Development of Windows Vista.
Build information
In the case of above example (derived from Windows Longhorn build 3683), the name of the operating system ("Longhorn XP Professional") is displayed on the first row of the watermark, with the other text displayed underneath it containing the phrase "For testing purposes only" (indicating that a test certificate is installed in the build), and the build number, the name of the build lab, and the compile date of the build ("Build 3683.Lab06_N.020923-1821" means that the build of Windows Longhorn is 3683, compiled by the Lab06_N build lab on September 23, 2002 at 18:21 or 6:21 PM PDT).