编写条件：
VAR2:=LLV(LOW,35); VAR3:=HHV(HIGH,21); VAR4:=EMA((CLOSE-VAR2)/(VAR3-VAR2)*100,20)*0.8; 短线通道:30; 短线:EMA(0.667*REF(VAR4,1)+0.333*VAR4,1); DRAWTEXT(CROSS(短线,短线通道) ,短线+1,'买入'),COLORFFFFFF;编写方法：
VAR2:=LLV(LOW,35);
VAR3:=HHV(HIGH,21);
VAR4:=EMA((CLOSE-VAR2)/(VAR3-VAR2)*100,20)*0.8;
短线:=EMA(0.667*REF(VAR4,1)+0.333*VAR4,1);
crOSS(短线,30);
