Vampyr, on 2013-September-23, 21:01, said:
I think there has to be an awareness that it is an irregularity. If the auction goes: 1♠ - 1♥ and the next player asks offender to move the 1♥ bidding card to a position where he can see it better, that is drawing attention to the 1♥ bid, but not to the irregularity of the insufficient bid. If one player invites another to change a card and no one recognises this as an irregularity, attention has not been drawn to the irregularity.