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?來源:程序化99

參考：

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N:=BARSLAST(YEAR<>REF(YEAR,1))+1;
M:=BARSLAST(QUARTER<>REF(QUARTER,1))+1;
DRAWSL(CROSS(BACKSET(ISLASTBAR||REFX1(N=1,1),HHVBARS(H,N)+1),0.5),H,0,1,2,COLORRED);
DRAWSL(CROSS(BACKSET(ISLASTBAR||REFX1(N=1,1),LLVBARS(L,N)+1),0.5),L,0,1,2,COLORRED);
DRAWSL(CROSS(BACKSET(ISLASTBAR||REFX1(M=1,1),HHVBARS(H,M)+1),0.5),H,0,1,2,COLORGREEN);
DRAWSL(CROSS(BACKSET(ISLASTBAR||REFX1(M=1,1),LLVBARS(H,M)+1),0.5),L,0,1,2,COLORGREEN);