Double 6-7 HCP
Pass is 0-5 HCP
Cue bid their suit shows balanced hand without as stopper in their suit
1NT shows 8+ points and stopper in their suit
Cue bid their suit at the 3lvl is 3 suited hand with shortness in their suit
Any suit bid is game force with 5+ of suit
Jump-sift is 5-7 HCP with long suit and all those point in the bid suit - exception is after 1c-1d then all systems are on.
Options for opener when it comes back to them after a pass or double
Bid Their 5 card suit
1NT overcall is the range of 1NT followup (16-18 HCP) with a stopper in bid suit
If reponder passes and opener DBLs it is a take out and a rebid is game force 22+ points
- If 1NT is available after the DBL this is the same as 2NT bid