The Exception to Rule 6-6d is modified as follows:
Exception: If a competitor returns a score for any hole lower than actually taken due to failure to include one or more penalty strokes that, before returning his score card, he did not know he had incurred, he is not disqualified. In such circumstances, the competitor incurs the penalty prescribed by the applicable Rule, but there is no additional penalty for a breach of Rule 6-6d. This Exception does not apply when the applicable penalty is disqualification from the competition.