HIGHN:=10;LOWN:=10;HIGHDISPLAY:=0;LOWDISPLAY:=0;ZGDISPLAY:=0;MADISPLAY:=0;
AA:=REF(H,HIGHN)=HHV(H,2*HIGHN+1);
QY:=BACKSET(AA,HIGHN+1);
CC:=FILTER(QY,HIGHN) AND H=HHV(H,HIGHN+1);
CC;
綠色箭頭
LOWN:=10;
AA1:=REF(L,LOWN)=LLV(L,2*LOWN+1);
QY1:=BACKSET(AA1,LOWN+1);
CC1:=FILTER(QY1,LOWN) AND L=LLV(L,LOWN+1);
CC1;
紅色箭頭