def provides_facts():
    """
    Returns a dictionary keyed on the facts provided by this module. The value
    of each key is the doc string describing the fact.
    """
    return {'RE_hw_mi':
        '(Routing Engine hardware multi-instance) A boolean indicating if this is a multi-chassis system.'
        , 'serialnumber':
        "A string containing the serial number of the device's chassis. If there is no chassis serial number, the serial number of the backplane or midplane is returned."
        }
