{参数 N: 2  250  20 }
MID:=MA(C,N);
VART1:=POW((C-MID),2);
VART2:=MA(VART1,N);
VART3:=SQRT(VART2);
UPPER:=MID+2*VART3;
LOWER:=MID-2*VART3;
BOLL:REF(MID,1),COLORFFFFFF;
上升:IF(BOLL>REF(BOLL,1),BOLL,DRAWNULL),COLORRED,LINETHICK1;
下降:IF(BOLL<REF(BOLL,1),BOLL,DRAWNULL),COLORGREEN,LINETHICK1;
UB:REF(UPPER,1),COLOR00FFFF;
LB:REF(LOWER,1),COLORFF00FF; 

{BB}
N:=20 ;
MID:=MA(C,N);
VART1:=POW((C-MID),2);
VART2:=MA(VART1,N);
VART3:=SQRT(VART2);
UPPER:=MID+2*VART3;
LOWER:=MID-2*VART3;
BB:(CLOSE-LOWER)/(UPPER-LOWER)*100;
ML:MA(BB,6);

{WIDTH}
N:=20 ;
MID:=MA(C,N);
VART1:=POW((C-MID),2);
VART2:=MA(VART1,N);
VART3:=SQRT(VART2);
UPPER:=MID+2*VART3;
LOWER:=MID-2*VART3;
WIDTH:(UPPER-LOWER)/MID;
ML:MA(WIDTH,6);

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BOLL 是源码；WIDTh，是我自己写的与源码一样;BB，有一点区别，形态各方向都一样，只是数值不一样，看样子他们特别处理过。具体看一看下面比较图。