Original sentence: The total available GDI varies from one version of Windows to the next.Windows 95, 98 and Millenium had a limit of 1,200 total handles, while Windows XP and Vista have a limit of 10,000 objects, and Windows 2000 has a limit of 16,384 objects
Edited sentence: The total available GDI objects varies from one version of Windows to the next: Windows 95, 98, and Millennium had a limit of 1,200 total objects; Windows 2000 has a limit of 16,384 objects; and Windows XP, Vista, and Windows 7 have a configurable limit (via the registry) that defaults to 10,000 objects