I do not understand why all this fuss, really. The most standard system that is in use on BBO is SAYC, as described in the SAYC convention card as posted. This is the fundamental bidding system that BBO has adopted for all players, no matter where they reside in the world. Any bid that is not featured in that convention card should be alerted. Those who do not play SAYC should still read it and know the difference of meaning between the bids they use per their system and the same bid in SAYC. If the meaning is different, simply alert and explain the difference. Taking the case of this afternoon, the Precision 1C opening showed almost any 16+ points hand and should be alerted, because it is different from the SAYC 1C opening bid. the Precision 1S response to 1C is game force, promises 8+ points and a 5 card spade suit. This is also different from the SAYC meaning of 1!S response to 1C. Therefore, it should be alerted too. As a matter of fact, when the auction starts with a Precision 1C bid, any subsequent bid has a meaning different from the same bid in SAYC and should be alerted. Now, one of the opponents demanded that the board be skipped because of the lack of alert of 1S. I disagree with that. I have personally and observed many times that people ask and receive undoes after 1,2,3 and sometimes 4 bids were made after their so called misclick. If that player felt that he had missed on something because of the lack of alert, he could have asked for the auction to revert to him right after the 1S response. By the way, I saw it done in ACBL live tourneys. You may argue, sure, but then let's argue on the misuse of the so called misclicks too