Here is a list of all namespaces with brief descriptions:

NArmControl
NArmEvent
NDriveControl
NDriveEvent
NEdgeControl
NEdgeEvent
NEyeControl
NEyeEvent
NEyeExpressions	Named eye expression/animation identifiers
NFanControl
NHelper
NImuControl
NImuEvent
NIoControl
NLcdControl
NLedControl
NLedEvent
NServoControl
NServoEvent
NSoundControl
NSoundEvent
NTofControl
NTofEvent
NTouchControl
NTouchEvent
NTtsControl