通达信四线抓大牛，无未来，游资专用，准确度极高未加密选股指标公式源码

FL:=ma(CLOSE,17)+Abs(MA(CLOSE,17)-REF(MA(CLOSE,17),1)),COLORRED;
FS:=MA(CLOSE,17)+MA(CLOSE,17)-REF(MA(CLOSE,17),1),COLORRED;
BB:IF(MA(CLOSE,17)<FS,FS,MA(CLOSE,17)),COLORRED;
年线:=ema(C,250);
A:=BB-(EMA(C,3)-BB),COLORRED;
difF:EMA((年线-(EMA(C,3)-年线)),5),LINETHICK2;
IF(BB=FS,BB,BB), COLORRED,LINETHICK2;
追涨跌破止损: EMA(COST(81),10) COLORWHITE,LINETHICK2;
牛熊线: EMA(COST(27),120), CIRCLEDOT;