编写条件：
BBI:=(MA(CLOSE,3)+MA(CLOSE,6)+MA(CLOSE,12)+MA(CLOSE,24))/4,COLORWHITE; UPR:=BBI+P*STD(BBI,N),COLORYELLOW; DWN:=BBI-P*STD(BBI,N),COLORFF00FF; A:(UPR-DWN)/DWN<0.03;编写方法：
N:=11;P:=6;
bbi:=(MA(CLOSE,3)+MA(CLOSE,6)+MA(CLOSE,12)+MA(CLOSE,24))/4;
UPR:=BBI+P*STD(BBI,N);
DWN:=BBI-P*STD(BBI,N);
A:(UPR-DWN)/DWN<0.03;
