X_11:=LLV(LOW,21);
X_12:=HHV(HIGH,21);
X_13:=EMA((CLOSE-X_11)/(X_12-X_11)*100,5);
X_14:=EMA((CLOSE-X_11)/(X_12-X_11)*50,13);
X_15:=CROSS(X_13,X_14);
X_16:=IF(CLOSE>REF(CLOSE,1),88,0);
X_17:=IF(CLOSE/REF(CLOSE,1)>1.05 AND HIGH/CLOSE<1.01 AND X_16>0,91,0);
龙头启动:FILTER(X_17>90,45)=1,coloryellow;