N:=20;
N1:=4;
N2:=60;
M:=40;
M1:=8;
M2:=120;

DIR1:=ABS(CLOSE-REF(CLOSE,N));
VIR1:=SUM(ABS(CLOSE-REF(CLOSE,1)),N);
ER1:=DIR1/VIR1;
CS1:=ER1*(2/(N1+1)-2/(N2+1))+2/(N2+1);
CQ1:=CS1*CS1;
AMA1:=EMA(DMA(CLOSE,CQ1),2);

DIR2:=ABS(CLOSE-REF(CLOSE,M));
VIR2:=SUM(ABS(CLOSE-REF(CLOSE,1)),M);
ER2:=DIR2/VIR2;
CS2:=ER2*(2/(M1+1)-2/(M2+1))+2/(M2+1);
CQ2:=CS2*CS2;
AMA2:=EMA(DMA(CLOSE,CQ2),2);
买线:REF(AMA1,1),COLORMAGENTA;
界点:REF(AMA2,1),COLORGRAY;