[DirectX 2 Programmer's Reference] Providing Standards for Hardware Accelerators (26.7037037037037%)

Introducing the DirectX 2 Software Development Kit > Using DirectX 2 in Windows

[DirectX 3 Programmer's Reference] Providing Guidelines for Hardware Development (19.047619047619%)

Introducing DirectX 3 > DirectX Goals

[DirectX 6 Programmer's Reference] Providing Guidelines for Hardware Development (18.7715665976536%)

Introducing DirectX 6.1 > DirectX Goals