So, what do you do when you come up with those rare one suited hands with 8 1/2 tricks? You can't cue bid the enemy suit cause that would be a Michael's cue bid (over a minor shows both majors, over a major shows the other major and a minor), so you can show it by making a Jump Cue Bid at the 3 level.

You have:

S: A

H: xx

D: AKQxxxxx

C: xx

After a 1C opening, you would bid 3C to show a strong one suited hand.

Responder (who cannot pass) responds:

1. 3NT with a stopper in the enemy suit
2. cheaper minor: showing no stopper and weak (no A and K, or 3K)
3. higher minor: showing no stopper and strong (at least A and K, or 3K)
4. any major: no stopper and good 6 card suit (forcing if below game)
5. higher NT: multiple stoppers in the enemy suit