BOLL:MA(CLOSE,21); 上档:BOLL+2*STD(CLOSE,21)COLORYELLOW; 下档:BOLL-2*STD(CLOSE,21),COLORYELLOW; BB:=V>MA(V,5) ; DD:=V IF(BB,上档,DRAWNULL),COLORRED,LINETHICK2; IF(DD,下档,DRAWNULL),COLORBLUE,LINETHICK2;