DIF:=EMA(CLOSE,12)-EMA(CLOSE,26);DEA:=EMA(DIF,9);:=(DIF-DEA)*2;:=MA(CLOSE,20);UPPER:=BOLL+2*STD(CLOSE,20);LOWER:=BOLL-2*STD(CLOSE,20);K1:=CLOSE>OPEN ;K2:=>=2*REF(,1);K3:=OSS(DIF,DEA) AND DIF<=0 ;K4:=CROSS(CLOSE,BOLL);:K1 AND K2 AND K3 AND K4 ;