通达信不实用咱不发（追涨+买底)源码附图

周J1:MA("KDJ.J#WEEK"(9,3,3) ,5);
 20,COLORRED;
 80,COLORGREEN;
 DRAWTEXT(CROSS(周J1,20),22,'抄底'),COLORFF33FF;
 DRAWTEXT(CROSS(周J1,80),82,'追涨'),COLORYELLOW;