LINE_LENGTH: 60

**********
Examples:
    >>> make_mapping()
    {"very_long_key": "very long value that should remain exact doctest output and not be prose wrapped"}
    >>> done()
    True

**********
Examples:
    >>> make_mapping()
    {"very_long_key": "very long value that should remain exact doctest output and not be prose wrapped"}
    >>> done()
    True
