Methods are 2/1, aggressive but not crazy openings. Intermediate 2 bids are used, so partner will not have a 6 card heart suit with 10-14 HCP unless he has a decent side 4 card suit. Negative doubles through 4♥.
If you do decide to X, the bidding goes P-4♠-P back to you.
Edit: Sorry, should give additional context. 4N in this auction is undiscussed, but partner is probably not going to take it as a natural call. Perhaps that's another question...should we have a way of bidding a natural 4N in this auction, or are the other meanings more useful?
This post has been edited by CSGibson: 2011-January-31, 01:23