Meckwell 2006
1§-1¨
Pass=#0-5HcP,ANY or trap
DBL=#6-7HcP,ANY
1©=8+HcP,5+©,GF
1ª=8+HcP,5+ª,GF
1NT=8+HcP,bal + Stop
2§=8+HcP,5+§,GF
2¨=8+HcP,bal,w/o Stop