def INK(n):
    """
    Returns control codes to set the ink colour (0-7).
    
    Use this in a ``PRINT`` or ``SET`` command. Example: 
    ``PRINT("normal",INK(1),"blue",INK(2),"red")``
    
    Args: 
    
    - n - integer - the ink colour (0-7)
    """
    return "".join((chr(16),chr(int(n))))