三线

MID : MA(CLOSE,20),COLORFF00FF,DOTLINE;

UPPER: MID + 2*STD(CLOSE,20),COLORGRAY,DOTLINE;

LOWER: MID - 2*STD(CLOSE,20),COLORGRAY,DOTLINE;

VAR1:=CLOSE>REF(CLOSE,1) AND CLOSE>REF(CLOSE,2);