FnF

MFnField
Function set for Dynamic Fields (OpenMayaFX) (OpenMayaFX.py)
MFnFluid
Fluid node function set (OpenMayaFX) (OpenMayaFX.py)

MFnFreePointTriadManip
FreePointTriadManip function set (OpenMayaUI) (OpenMayaUI.py)