'Move or query the window cursor.'

def pos(self, x=None, y=None):

    if (x is not None):
        System.Console.CursorLeft = x
    else:
        x = System.Console.CursorLeft
    if (y is not None):
        System.Console.CursorTop = y
    else:
        y = System.Console.CursorTop
    return (x, y)
