Introduction    Mouse
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 rButtons()      Returns number of buttons
 rCentre()       Determines if the center button is pressed
 rCursorOff()    Disables the mouse cursor display
 rCursorOn()     Enables the mouse cursor display
 rClick()        Returns the button press state
 rGetPosX()      Returns the horizontal cursor coordinate
 rGetPosY()      Returns the vertical cursor coordinate
 rHardCur()      Defines the hardware text cursor
 rInArea()       Determines if the mouse is on a zone of the screen
 rInkey()        Does the same as Inkey() but also takes care of the mouse
 rInkey2()       Does the same as Inkey() and takes care of the mouse & Setkey()
 rIsMouse()      Indicates if the system has a mouse
 rLeft()         Determines if the left button is pressed
 rReset()        Resets mouse driver
 rRight()        Determines if the right button is pressed
 rSens()         Defines the number of mickeys per pixels
 rSetArea()      Indicates the zone where the mouse is active
 rSetPos()       Changes the mouse cursor position
 rSoftCur()      Defines software text cursor