MID:MA(CLOSE,21),COLORWHITE;
    UPPER:MID + 1.96*STDP(CLOSE,21),COLORYELLOW;
    LOWER:MID - 1.96*STDP(CLOSE,21),COLORYELLOW;
    UP:MID + 2.58*STDP(CLOSE,21),COLORFF00FF;
    LOOW:MID - 2.58*STDP(CLOSE,21),COLORFF00FF;
    {1.96统计学中为95％可信区间，2.58为99％可信区间，故采用1.96和2.58作为参数}
    单边上升:=(C>MID);
    单边下降:=(C<MID);
    布林线开口:=UP-LOOW;
    多头行情:=C>MA(C,5) AND MA(C,5)>MA(C,10);
    股价在高位:=((C-LLV(C,30))/(HHV(C,30)-LLV(C,30))>0.6);
    股价在低位:=((C-LLV(C,30))/(HHV(C,30)-LLV(C,30))<0.4);
    布林线缩口:=((UPPER-MID)/MID<0.05); 
    STICKLINE(单边上升,MID,UP,6,0),COLOR330066;
    STICKLINE(单边下降,LOOW,MID,6,0),COLOR545454;
    DRAWTEXT(布林线缩口,MID,'▲'),COLORWHITE;
    MID,COLORWHITE;
    UPPER,COLORYELLOW;
    LOWER,COLORYELLOW;
    UP,COLORFF00FF;
DRAWKLINE(HIGH,OPEN,LOW,CLOSE);