学会这个方法，抓10倍大牛股的概率提升10倍>>

LRR:IF(FORCAST(C,5)>(REF(FORCAST(C,5),1)),1,IF(FORCAST(C,5)<(REF(FORCAST(C,5),1)),-1,0));

DRAWTEXT(LRR=1,1,'始');

DRAWTEXT(LRR=-1,-1,'终');