G:=IF(HIGH=HHV(HIGH,3),1,0);
D:=IF(LOW=LLV(LOW,3),1,0);
S:=IF(REF(G,2)=1 AND REF(G,1)=0 AND G=0,REF(HIGH,2),REF(HIGH,2+(BARSLAST(REF(G,2)=1 AND REF(G,1)=0 AND G=0))));
X:=IF(REF(D,2)=1 AND REF(D,1)=0 AND D=0,REF(LOW,2),REF(LOW,2+(BARSLAST(REF(D,2)=1 AND REF(D,1)=0 AND D=0))));
K1:=IF(HIGH>=MA(CLOSE,1),S,REF(S,BARSLAST(HIGH>MA(CLOSE,1))));
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K2:=IF(LOW<=MA(CLOSE,5),X,REF(X,BARSLAST(LOW<=MA(CLOSE,5))));
C1:=REF(CLOSE,1)<=K1 AND CLOSE>K1;
C2:=REF(CLOSE,1)>=K2 AND CLOSE K3:=BARSLAST(C1);
K4:=BARSLAST(C2);
波段起点:CROSS(K4,K3);