文档介绍：/*
//前长后短;
FG21:=IF(GT1=0 AND DT1<4 AND H<=REF(H,REF(GT1,1)+1) ,1,0),NODRAW;
FD21:=IF(DT1=0 AND GT1<4 AND L>=REF(L,REF(DT1,1)+1) ,1,0),NODRAW;
//前短后长,前低后高（去低）;
FD231:=BACKSET(REFX(GT1,1)=0 AND DT1>3 AND GT1>DT1 AND GT1-DT1<4 AND REFX(H,1)>REF(H,GT1) AND REF(L,DT1)>REF(LLV(L,10),DT1),DT1+1),NODRAW;
FG23:=BACKSET(REFX(GT1,1)=0 AND DT1>3 AND GT1>DT1 AND GT1-DT1<4 AND REFX(H,1)>REF(H,GT1) AND (REF(H,GT1)<REF(HHV(H,13),GT1) OR REF(FD231,DT1)=0),GT1+1),NODRAW;
//前短后长，去2;
FG231:=BACKSET(REFX(DT1,1)=0 AND GT1>3 AND DT1>GT1 AND DT1-GT1<4 AND REFX(L,1)<REF(L,DT1) AND REF(H,GT1)<REF(HHV(H,10),GT1) ,GT1+1),NODRAW;
FD23:=BACKSET(REFX(DT1,1)=0 AND GT1>3 AND DT1>GT1 AND DT1-GT1<4 AND REFX(L,1)<REF(L,DT1) AND ( REF(L,DT1)>REF(LLV(L,13),DT1) OR REF(FG231,GT1)=0),DT1+1),NODRAW;
//前短后长，去3;
FDD23:=REF(H,GT1)<REF(HHV(H,10),GT1) OR REF(FD23,DT1)=0,NODRAW;
FD24:=BACKSET(REFX(GT1,1)=0 AND DT1>3 AND GT1>DT1 AND GT1-DT1<4 AND REFX(H,1)<HHV(H,GT1+3) AND REF(L,DT1)>LLV(L,DT1+5),DT1+1),NODRAW;
FG24:=BACKSET(REFX(DT1,1)=0 AND GT1>3 AND DT1>GT1 AND DT1-GT1<4 AND REFX(L,1)>LLV(L,DT1+3) AND REF(H,GT1)<HHV(H,GT1+5),GT1+1),NODRAW;
//做两次高低点间多余的点
GT2:=BARSLAST(FG21<>1 AND FG23<>1 AND FG231<>1 AND FG24<>1 AND FG2<>1 AND FG2A<>1 AND FG2B<>1 AND GT1=0),NODRAW;
DT2:=BARSLAST(FD21<>1 AND FD23<>1 AND FD231<>1 AND FD24<>1 AND FD2<>1 AND FD2A<>1 AND FD2B<>1 AND DT1=0),NODRAW;
FG3:=BACKSET(REF