M1:MA(C,5),coloryellow;
M2:MA(C,10),colorcyan;
M3:MA(C,20),colorgreen;
M4:MA(C,30),colorred,linethick2;
最大值:=MAX(MAX(M1,M2),MAX(M3,M4));
最小值:=MIN(MIN(M1,M2),MIN(M3,M4));
DRAWICON((O<=最小值 AND C>=最大值 ),LOW*0.9,"buy"),colorred