Gamepad             - Read any USB game controller  
[AxisCenter](AxisCenter)          - Return a constant for the axis center position, 0.  
[AxisDown](AxisDown)            - Return a constant for the axis in the extreme down position, 32767.  
[AxisLeft](AxisLeft)            - Return the value for axis in extreme left position, -32768.  
[AxisMax](AxisMax)             - Returns the maximum value for an axis, 32767.  
[AxisMin](AxisMin)             - Returns the minimum value for an axis, -32768.  
[AxisRight](AxisRight)           - Returns the value for an axis in the extreme right position, 32767  
[AxisUp](AxisUp)              - Returns a constant for the axis in the extreme up position, -32768  
[HatCenter](HatCenter)           - Return a constant for hat center position.   
[HatUp](HatUp)               - Return a constant for hat up position.  
[HatRight](HatRight)            - Return a constant for hat right position.  
[HatDown](HatDown)             - Return a constant for hat down position.  
[HatLeft](HatLeft)             - Return a constant for hat left position  
[HatRightUp](HatRightUp)          - Return a constant for hat right and up position  
[HatRightDown](HatRightDown)        - Return a constant for hat right and down position  
[HatLeftUp](HatLeftUp)           - Return a constant for hat left and up position  
[HatLeftDown](HatLeftDown)         - Return a constant for the hat left and down position