N:=5;
A1:=BACKSET(ISLASTBAR,PEAKBARS(1,N,1)+1);
A2:=A1>REF(A1,1);
B1:=BACKSET(ISLASTBAR,PEAKBARS(1,N,2)+1);
B2:=B1>REF(B1,1);
C1:=BACKSET(ISLASTBAR,PEAKBARS(1,N,3)+1);
C2:=C1>REF(C1,1);
DRAWLINE(B2,H,A2,H,1);
DRAWLINE(C2,H,B2,H,0);{N:3.1.99，主图叠加};
IF(A1,PEAK(1,N,1),DRAWNULL);
{DRAWLINE(C2,H,A2,H,1);}
A11:=BACKSET(ISLASTBAR,TROUGHBARS(2,N,1)+1);
A21:=A11>REF(A11,1);
B11:=BACKSET(ISLASTBAR,TROUGHBARS(2,N,2)+1);
B21:=B11>REF(B11,1);
C11:=BACKSET(ISLASTBAR,TROUGHBARS(2,N,3)+1);
C21:=C11>REF(C11,1);
DRAWLINE(B21,L,A21,L,1);
DRAWLINE(C21,L,B21,L,0);
{DRAWLINE(C21,L,A21,L,1);}
IF(A11,TROUGH(2,N,1),DRAWNULL);
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