[DirectX 7 Programmer's Reference] Constant Forces (77.2727272727273%)

Microsoft DirectX 7.0 > DirectInput > DirectInput Essentials > Force Feedback > Effect Types

[DirectX 8.1 C/C++ Programmer's Reference] Constant Forces (75%)

DirectX 8.1 (C++) > DirectInput > Using DirectInput > Force Feedback > Effect Types

[DirectX 8.1 Visual Basic Programmer's Reference] Constant Forces (75%)

DirectX 8.1 (Visual Basic) > DirectInput > Using DirectInput > Force Feedback > Effect Types

[DirectX 5 Programmer's Reference] Constant Forces (36.8792971734148%)

DirectX Foundation > DirectInput > DirectInput Essentials > Force Feedback

[DirectX 6 Programmer's Reference] Constant Forces (36.8792971734148%)

DirectX Foundation > DirectInput > DirectInput Essentials > Force Feedback

[DirectX 8.1 C/C++ Programmer's Reference] Constant Parameters (32.141014300457%)

DirectX 8.1 (C++) > DirectX Graphics > Reference > Effect File Reference