[DirectX 7 Programmer's Reference] Viewports and Clipping (95.2380952380952%)
Microsoft DirectX 7.0 > Direct3D > Direct3D Immediate Mode > Direct3D Immediate Mode Essentials > Geometry Pipeline
[DirectX 5 Programmer's Reference] Viewports and Transformations (66.5060851926978%)
DirectX Foundation > Direct3D Immediate Mode > Direct3D Immediate-Mode Essentials > Viewports and Transformations
[DirectX October 2006 Documentation] Viewports and Clipping (42.7658019729631%)
DirectX Graphics > Direct3D 9 > Programming Guide > Getting Started
[DirectX 8.1 C/C++ Programmer's Reference] Viewports and Clipping (41.678845451224%)
DirectX 8.1 (C++) > DirectX Graphics > Programmers Guide > Using Direct3D
[DirectX 8.1 Visual Basic Programmer's Reference] Viewports and Clipping (41.678845451224%)
DirectX 8.1 (Visual Basic) > DirectX Graphics > Programmers Guide > Using Direct3D