. . .   The MOUSE System   . . .
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FUNCTIONS
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 ClearMouse()             Unloads the mouse driver.
 InitMouse()              Initialize mouse.
 InMouse()                Gets a mouse event.
 IsMouse()                Return a status of the mouse shape and buttons.
 MouseRow()               Return the current mouse row.
 MouseCol()               Return the current mouse col.
 MouseHotRow()            Return the pixel row of the mouse hot spot.
 MouseHotCol()            Return the pixel column of the mouse hot spot.
 MouseInRow()             Return the mouse row of the latest button click.
 MouseInCol()             Return the mouse column of the latest button click.
 ResetMouse()             Resets the mouse driver.
 SetExtMode()             Set extended video mode.
 SetMouse()               Set the mouse shape.
 SetMousePos()            Move the mouse cursor to a location on the screen.
 SetMouseRange()          Restrict the movement of the mouse pointer.