EF:=MAX(HHV(C,3)-LLV(C,3),ABS(C-REF(C,3)))/SUM(ABS(C-REF(C,1)),3);EFMA:=EMA(EF,3);MER:=INTPART(3-(EFMA-0.5)*3);LY:=SUM((C-REF(C,1)),MER);LYSX:=EMA(LY,3);XG:CROSS(LYSX,0)&&O>C;