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?來源:程序化99
參考：
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MID:MA(CLOSE,26);
TMP2:=STD(CLOSE,26);
TOP:MID+2*TMP2;
BOTTOM:MID-2*TMP2;
A:=TOP<REF(TOP,1)&&BOTTOM>REF(BOTTOM,1);//收口
B:=TOP>REF(TOP,1)&&BOTTOM<REF(BOTTOM,1);//張口
DRAWICON(CROSS(A,0.5),H,4);
DRAWICON(CROSS(B,0.5),H,5);