Improved SAYC ( 2/1 game forcing: 1NT response can be bad 11 hcp ); Jacoby2NT; 1NT opening bid improved; 3NT strong gambling; answers on 2C: controls steps; 2D: weak, both major or any 4441 very strong; RKCB, cue-bids, leads journalist and Kantar, odd-even, reverse counting, smit on leads vs NT; Ghestem 2 suiters; conventions by Garozzo..etc..