N:=20;obv:SUM(IF(CLOSE>REF(CLOSE,1),VOL,IF(CLOSE<REF(CLOSE,1),-VOL,0)),0);w5:ma(obv,5);w10:ma(obv,8);w20:ma(obv,13);VAR1:=obv;支撑:=EMA(VAR1,5);压力:HHV(支撑,n),COLORRED,linethick2;