ABC1:=C=LLV(C,60);
ABC2:= REF(SUM((C-REF(C,1))/C*100,3)< -10,1) OR REF(SUM((C-REF(C,1))/C*100,4)< -10,1) OR REF(SUM((C-REF(C,1))/C*100,5)< -15,1);
至阴买入法:FILTER(CROSS(0.5,ABC1),10) AND ABC2 LINETHICK2 COLORRED;
DRAWICON(至阴买入法,1,9);
DRAWTEXT(至阴买入法,0.6,' ★至阴买'),COLORLIMAGENTA;