{昨最高 最低畫(huà)線}

A:=CURRBARSCOUNT;

 A1:=DAY!=REF(DAY,1);

 A2:=BARSLAST(A1)+1;

 A3:=REF(IF(A2=1,1,A2),A2);

 A4:=CONST(REF(HHV(H,A3),A2));

 A5:=CONST(REF(LLV(L,A3),A2));

 A6:=MA(AMO,A3)/MA(VOL,A3)/100;

 A7:=REF(MA((H+O+L+C)/4,A3),A2);

 A8:=IF(CAPITAL>0,REF(A6,A2),A7);

 昨高:IF(A<=CONST(A3+A2),A4,DRAWNULL);

 昨低:IF(A<=CONST(A3+A2),A5,DRAWNULL);