User Input Functions (Graphics Library)

Procedures (from graphics library) for working with mice, gaming devices 
and keyboards.

Description
   These procedures provide access to external devices such as keyboards, 
   mice and gamepads.

Mouse and Joystick Input
   Procedures that provide state information of the mouse or joystick.
Keyboard Input
   Procedures that provide keyboard state information.

Mouse and Joystick Input
   GetMouse
      Gets button and axis information for the mouse.
   SetMouse
      Sets position and visibility of the mouse cursor.
   GetJoystick
      Gets button and axis information for gaming devices.
   Stick
      Gets axis position for gaming devices.
   Strig
      Gets button state for gaming devices.
Keyboard Input
   MultiKey
      Gets key information for the keyboard.

