System       Natural
NT           15-17,Jxf,Leb,sys off over x, 2S=mss or correct to 3d with
                 diam bust, 2N invitational, negative double to 3 spades
                 2N=20-21, 3C = Double-O, 3D/H = transfer to H/S, 3S=minor stayman,
                 system off over X
                 3C/D = invitational
                 3H/S = game force, 6 card
1 club	     3 cards (only when 4333), 1C-2C = inverted (force to 2nt or 3min) off in competition,
		 1C-3C = preemptive
	         1C-2NT = 10-12, bypass 1D unless GF strength or rebid of diamonds
1 diamond    4 cards, 1D-2D = inverted (force to 2nt or 3min) off in competition,
	 	 1D-3D = preemptive
	         1D-2NT = 10-12
1 heart	     4 cards, J2N(3X=2nd suit, 4X = void, responder 3M = ask for
                 singleton, 3N = ask for cuebid; J2N on after overcall), drury when passed
1 spade      5 cards, J2N(3X=2nd suit, 4X = void, responder 3M = ask for
                 singleton, 3N = ask for cuebid; J2N on after overcall), drury when passed

Strong       2C, 2D = negative or balanced positive, cheapest 3 level is 2nd neg
		 2NT = both minors (at least 5-4)
2 diamonds   Weak 5-9 (wider 3rd, stronger 4th), 2NT natural
2 H/S	     Weak 5-9 (wider 3rd, stronger 4th), 2NT asks for singleton, RONF
Overcalls    6-20, new suit nf tends to deny good supp, Q=1rd force, Q then new
                 suit forcing, weak raises if next opp doubles, weak jumps
NT-Over      15-18, System on
Doubles      Neg-3S, Resp-3S, Support x and xx ->2H
Vs.Doubles   if partner opener-new frce 1 level only, xx implies no fit 10+
Preempts     standard type, new suits forcing
Vs.Preempts  X=takeout, Lebenshol/weak 2 all seats
Cuebids      Majors over minor, highest + lowest over major
Slam-Bids    0314 RKC 
Suit-leads   3th and 5th best, Akx(x)
NT-leads     3th and 5th best, Akx(x)
Carding      small encouraging
Misc         4SF(GF),2C checkback; over strong 1C or 2C X=maj, NT=minors
	     vs NT: 2C=majors (4+-4+); 2D=H or S+ m (often 4S); 2H=H + m (often 4H)