MA5:MA(CLOSE,5),COLORFFFFFF;MA10:MA(CLOSE,10),COLOR00FFFF;MA21:MA (CLOSE,21),COLOR00FF00;MA30:MA(CLOSE,30),COLOR0000FF;买线:=EMA (C,2);卖线:=EMA(SLOPE(C,21)*20+C,42);BUY1:=OSS(买线,卖线);SEL:=CROSS(卖线,买线);DRAWTEXT(BUY1,LOW*0.95,'B'),COLORWHITE,LINETHICK5;DRAWTEXT (SEL,HIGH*1.05,'S'),COLORWHITE,LINETHICK5;STICKLINE(买线>=卖线,LOW,HIGH,0.1,0),COLORYELLOW;STICKLINE(买线>=卖线,CLOSE,OPEN,3,3),COLORYELLOW;STICKLINE(买线<卖线,CLOSE,OPEN,3,3),COLORGREEN;STICKLINE(买线<卖线,LOW,HIGH,0.1,0),COLORGREEN;STICKLINE(CROSS(买线,卖