P

MPlug
Create and Access dependency node plugs. (OpenMaya) (OpenMaya.py)
MPlugArray
Array of MPlugs data type. (OpenMaya) (OpenMaya.py)
MPoint
Implementation of a point. (OpenMaya) (OpenMaya.py)
MPointArray
Array of MPoint data type. (OpenMaya) (OpenMaya.py)
MPolyMessage
Polygon component id change messages. (OpenMaya) (OpenMaya.py)
MProgressWindow
Create and manipulate progress windows. (OpenMayaUI) (OpenMayaUI.py)