lamford, on 2017-January-16, 20:57, said:
An interesting question arises as to whether the player can "respond" to the Pass showing a weak NT with two four-card majors with one of a major, NF, obviously, or whether this would fall foul of the regulation for "opening" one of a suit. The level 2 regulations do not appear to address this.
Hmmm; If that were to happen, I guess you could pretend the less looking good major as 3 cards and open the same weak nt the other person had; gonna have the points get to game in any case just have to know what contract and where to play it...
Edit I see what your question intended to be; I would they would be able to even in acbl standards; just mark 4 card majors in 3rd/4th seat