{N 1  300 12;
 M1 1 300 3
 M2 1  300 3};

超买线:80,COLORGREEN;
中间线:50,COLORWHITE;
超卖线:20,COLORRED;
 RSV:=(CLOSE-LLV(LOW,N))/(HHV(HIGH,N)-LLV(LOW,N))*100;
 K:SMA(RSV,M1,1),LINETHICK0,COLORGREEN;
 D:=SMA(K,M2,1),LINETHICK0;
 J:=3*K-2*D,LINETHICK0;
 STICKLINE(K>=D,K,D,1,1),COLORRED;
 STICKLINE(K  DRAWTEXT(K>D AND ISLASTBAR,50,'持股'),COLORRED;
 DRAWTEXT(K  DRAWTEXT(K>80 AND ISLASTBAR,80,'超买'),COLORGREEN;
 DR