[shugart24]

bidding goes 1D -1H by you-1S -? partner has a choice of cue bids Is there a 'standard' meaning of a 2D bs a 2S cuebid here, by partner ?

[jdiana]

I think it's most common to treat a bid of LHO's suit as a cue bid (e.g., 2♦ as LR+ in hearts) and a bid of RHO's suit as natural, but it's definitely worth discussing with your partner.

[pescetom]

I agree that this seems the most frequent treatment. It has the advantages of being simple, offering some defence against psyches by Responder and not requiring much knowledge of the opponents agreements. I don't like it myself, I prefer the meta-rule that a direct cue is always artificial: but that's partly a question of national style, I've noticed that English speaking nations are much more comfortable with a natural cue.

I have seen it suggested that the cue of Responder's suit should promise the unbid suit in a stronger hand than double would, or that it should also promise a stop (Robson and Segal say something like this, IIRC).

With one partner I agreed that the more economical cue promises 3 card support and the other 4 card support, which seems reasonable to me.