def _pretty_frame_relation_type(freltyp):

    """
    Helper function for pretty-printing a frame relation type.

    :param freltyp: The frame relation type to be printed.
    :type freltyp: AttrDict
    :return: A nicely formated string representation of the frame relation type.
    :rtype: str
    """
    outstr = "<frame relation type ({0.ID}): {0.superFrameName} -- {0.name} -> {0.subFrameName}>".format(freltyp)
    return outstr