FrancesHinden, on 2011-October-29, 05:09, said:
A pedant who thinks that 5B9 does not apply if there is another clause on the same subject would argue:
Under 5F1(a) A bid of a suit which shows that suit and does not show any other suit is considered 'natural' for alerting purposes. The 2H bid in 1S-1NT-2H shows both four hearts (or more) and a fifth spade (or more). However, the bid is correctly not alerted under 5B9. This is because of the general rule which clearly takes precedence over the specific rule.
A better example would be, uncontested, 1NT-2C(Stayman)-2S, showing four spades and two or three hearts in many methods. This would be alertable under 5F1(a), but 5B9 means it is not alerted as it can be assumed without discussion. I presume "show any other suit" means "give information about the length or strength of any other suit."

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