大趋势预警指标，收盘价跌破严重预警线离场。

M10:MA(C,10),LINETHICK2;
M100:MA(C,100);
U:REF(HHV(HIGH,50),1),colorred;
D:REF(LLV(LOW,50),1),colorgreen;
D2:REF(LLV(LOW,25),1),colorblue,CIRCLEDOT;