The OBV indicator code I wrote

{- - - OBV - - - - - - -}

X: = (C+H+L+O) /4;

OBV: =TMA (VOL*SIGN (X-REF (X,1)) ,1,1);

{- - - -OBV END - - - -}

Experience: Since the volume that the software system can provide is not the total trading volume of the entire trading market, there is a problem with its quantitative reliability. Plus, whether the change in X is consistent with the change in actual quantitative energy is also questionable. It's still not necessary.