input:n(20, 1,100);
MID := MA(CLOSE,N);
HH:=MID + 2*STDDEV(CLOSE,N);
LL:=MID - 2*STDDEV(CLOSE,N);
RSV:= (close-MID)/STDDEV(close,N)*100;
k:SMA(RSV,3,1),colorwhite;
D:SMA(K,3,1),coloryellow;
J:3*K-2*D;
-170,colorgreen;
0,pointdot,colorff9000;
170,colorred;
![](http://www.chcj.net/attachments/month_0707/20070727_b70fc52d339bf165a09795ceZPvoNIVw.gif) |