A1:=REF(HIGH,3)=HHV(HIGH,2*3+1); B1:=FILTER(A1,3); C1:=BACKSET(B1,3+1);D1:=FILTER(C1,3);
 A2:=REF(LOW,3)=LLV(LOW,2*3+1); B2:=FILTER(A2,3); C2:=BACKSET(B2,3+1);D2:=FILTER(C2,3);
 E1:=(REF(LLV(LOW,2*3),1)+REF(HHV(HIGH,2*3),1))/2; E2:=(HIGH+LOW)/2;
 H1:=(D1 AND NOT(D2 AND E1>=E2)) OR ISLASTBAR OR BARSCOUNT(CLOSE)=1;
 L1:=(D2 AND NOT(D1 AND E1<E2)); H2:=D1 AND NOT(D2 AND E1>=E2);
 X1:=REF(BARSLAST(H1),1)+1; F1:=BACKSET(H1 AND COUNT(L1,X1)>0,LLVBARS(IF(L1,LOW,10000),X1));
 G1:=F1>REF(F1,1); I1:=BACKSET(G1,2); LD:=I1>REF(I1,1);
 L2:=LD OR ISLASTBAR OR BARSCOUNT(CLOSE)=1;
 X2:=REF(BARSLAST(L2),1)+1; F2:=BACKSET(L2 AND COUNT(H2,X2)>0,HHVBARS(IF(H2,HIGH,0),X2));
 G2:=F2>REF(F2,1); I2:=BACKSET(G2,2); HD:=I2>REF(I2,1);
 DRAWLINE(LD,L,HD,H,0),COLORWHITE,LINETHICK1,POINTDOT;
 DRAWLINE(HD,H,LD,L,0),COLORWHITE,LINETHICK1,POINTDOT;
 J1:=BACKSET(ISLASTBAR,MIN(BARSLAST(HD),BARSLAST(LD))+1); J2:=J1>REF(J1,1);
 DRAWLINE(J2,IF(HD,H,L),ISLASTBAR,IF(BARSLAST(HD)>BARSLAST(LD),H,L),0),COLORWHITE,LINETHICK1,POINTDOT;
 A3:=H<REF(H,REF(BARSLAST(HD),1)+1);
 B3:=REF(H,REF(BARSLAST(HD),1)+1)>REF(H,REF(BARSLAST(HD),1)+2+REF(BARSLAST(HD),REF(BARSLAST(HD),1)+2));
 D3:=A3 AND B3 AND HD; E3:=BACKSET(D3,REF(BARSLAST(HD),1)+2); HH:=E3>REF(E3,1);
 A4:=L>REF(L,REF(BARSLAST(LD),1)+1);
 B4:=REF(L,REF(BARSLAST(LD),1)+1)<REF(L,REF(BARSLAST(LD),1)+2+REF(BARSLAST(LD),REF(BARSLAST(LD),1)+2));
 D4:=A4 AND B4 AND LD; E4:=BACKSET(D4,REF(BARSLAST(LD),1)+2); LL:=E4>REF(E4,1);
 H3:=HH OR ISLASTBAR OR BARSCOUNT(C)=1;
 X3:=REF(BARSLAST(H3),1)+1; F3:=BACKSET(H3 AND COUNT(LL,X3)>0,LLVBARS(IF(LL,L,POW(10,20)),X3));
 G3:=F3>REF(F3,1);  I3:=BACKSET(G3,2);  LZ:=I3>REF(I3,1),LINETHICK0;
 L4:=LZ OR ISLASTBAR OR BARSCOUNT(C)=1;
 X4:=REF(BARSLAST(L4),1)+1; F4:=BACKSET(L4 AND COUNT(HH,X4)>0,HHVBARS(IF(HH,H,-POW(10,20)),X4));
 G4:=F4>REF(F4,1);  I4:=BACKSET(G4,2);  HZ:=I4>REF(I4,1),LINETHICK0;
 DRAWLINE(HZ,H,LZ,L,0),COLORGREEN,LINETHICK1;
 DRAWLINE(LZ,L,HZ,H,0),COLORGREEN,LINETHICK1;
 K1:=BACKSET(ISLASTBAR,MIN(BARSLAST(HZ),BARSLAST(LZ))+1); K2:=K1>REF(K1,1);
 DRAWLINE(K2,IF(HZ,H,L),ISLASTBAR,C,0),COLORGREEN,LINETHICK1;