pran, on 2014-December-17, 15:50, said:
A player who is required to pass has no need for understanding the auction in order to select his own call.
No, but he may need to understand it in order to plan his defense, and there's nothing in the laws that says he can't start doing that during the auction.
pran, on 2014-December-17, 15:50, said:
If he is asked by an opponent to explain his partner's call then it is perfectly legal (in case) to answer that it depends on the meaning of an opponent's call and give the individual explanations for the relevant alternatives.
Agreed.
pran, on 2014-December-17, 15:50, said:
I don't think it is proper by an opponent in such situations to uninvited (by the barred player's partner) clarifying his own or his partner's call in question.
Such an extraneous comment might violate Law 73B1, I think. Or it might not. It seems to be not strictly in accord with the procedures in Laws 20F, and so I suppose that makes it improper. But if it's not deemed a violation of 73B1, what should the TD do about it? Explain the proper procedure, I suppose, the first time it happens, but what if the player persists in doing this?
If your procedure above is followed, then the question is usually irrelevant, because the opponent will not have occasion to clarify anything — unless the meaning of his or his partner's call is not among the possibilities covered by the explanation. What then?