公式编写要求：
买线:=EMA(C,2);卖线:=EMA(SLOPE(C,21)*20+C,42);BU:=CROSS(买线,卖线);SEL:=CROSS(卖线,买线);DRAWTEXT(BU,LOW*0.98,'B买'),COLORYELLOW;DRAWTEXT(SEL,HIGH*1.008,'止损'),COLORGREEN;DRAWTEXT(CROSS(ZIG(3,8),REF(ZIG(3,8),1)),LOW*0.978,'★绝佳') ,LINETHICK2,COLORRED;{STICKLINE(买线>=卖线,LOW,HIGH,0.0,1),COLORRED;STICKLINE(买线>=卖线,CLOSE,OPEN,1,0),COLORLIRED;}STICKLINE(买线<卖线,CLOSE,OPEN,1,0),COLORGRAY;{STICKLINE(买线<卖线,LOW,HIGH,0.0,0)COLORGRAY;}STICKLINE(CROSS(买线,卖线),OPEN,CLOSE,1,0),COLORYELLOW;STICKLINE(CROSS(卖线,买线),OPEN,CLOSE,1,0),COLORBLUE;DRAWTEXT(CROSS(REF(ZIG(3,10),1),ZIG(3,10)),HIGH*1.02,'S卖'),COLORGREEN;STICKLINE(CROSS(REF(ZIG(3,10),1),ZIG(3,10)),OPEN,CLOSE,1,0),COLORBLUE;A25:=EMA(EMA(EMA(CLOSE, 3), 3), 3);多方:((A25-REF(A25,1))+A25)COLORMAGENTA,LINETHICK2;空方:MA(多方, 4)COLORCYAN,LINETHICK1;K2:=BACKSET(多方<REF(多方,1),2);IF(K2,多方,DRAWNULL),COLORWHITE,LINETHICK2;K1:=BACKSET(空方<REF(空方,1),2);IF(K1,空方,DRAWNULL),COLORWHITE,LINETHICK0;SSL:=EMA(CLOSE,3);MMV:=EMA(((SLOPE(CLOSE,22) * 20) + CLOSE),55);MM:=MA(MMV,1);SA:=(MM*0.985);这是主图指标，请高手在出现“绝佳”时给写个选股公式。
公式编写方法：
CROSS(ZIG(3,8),REF(ZIG(3,8),1));
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