N:=25;A:=1,COLORGREEN;顶:1.,COLORGREEN;:=MA(CLOSE,N);UPPER:=BOLL+2*STD(CLOSE,N);LOWER:=BOLL-2*STD(CLOSE,N);BB:(C-LOWER)/(UPPER-LOWER),COLORYELLOW,LINETHICK2;:OSS(BB,0),COLORMAGENTA;