New Minor Forcing: After opener rebids 1NT, responder often finds it useful to make a low-level forcing bid. Frequently this is done to see if opener has three-card support for responder’s suit.
Suppose as responder you hold: 
Q 7 6 
A J 10 6 3 
K 7 5 
J 10.
Consider your bid when the auction proceeds as follows:
Opener Responder
1 1
1NT ?
Playing standard, you would have no good bid. You have the strength to rebid 2NT, but you would like to show your five-card heart suit. Rebidding hearts, however, should show a six-card suit and a nonforcing hand. Therefore, you may
choose to raise 1NT to 2NT. The problem with this bid is that if opener has a minimum, he would have to pass and you may have a 5–3 heart fit. In fact, 2 may be the best contract if partner is minimum.
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