1D->Pass
0-5 points
1D->1H
4+ hearts and 6+ points. Forcing. 4-4 Majors -> 1H
1D->1S
4+ spades and 6+ points. Forcing. 5-5 Majors -> 1S
1D->1NT
6-9 points. Denies a 4-card major,tends to deny 4+D. Non-forcing.
1D->2C
4+ clubs and 10+ points. Forcing.
1D->2D (A single raise)
6-9 points, 4-card support. Denies a 4-card major. Non-forcing.
1D->2H/S (A Strong Jump Shift)
17-19 points, 5+ card suit. Forcing to game.
1D->2NT
balanced 13-15 HCP or 10-12 pts
1D->3C (Strong Jump Shift)
5+ clubs and 17-19 points. Forcing to game.
1D->3D (Limit raise)
4+ diamonds and 10-12 points. Denies a 4-card major. Non-forcing.
1D->3NT
balanced 15-17 HCP. or 13-15 pts
4NT
Blackwood, asking for aces