'Returns a simple list of all keywords and their comments.'

def __repr__(self):

    keyword_length = KEYWORD_LENGTH
    for card in self._header._cards:
        keyword_length = max(keyword_length, len(card.keyword))
    return '\n'.join(('{:>{len}}        {}'.format(c.keyword, c.comment, len=keyword_length) for c in self._header._cards))
