In the futures markets the data on trade volumes is reported with a one-day delay. To compensate for this, many analysts use the tick volume indicator (tick volume™): it allows you to track volume changes during the trading day.
Tick volume indicates the number of deals concluded over a certain intraday period, but does not show the number of contracts per deal. Thus, it can make, for example, 50 deals per hour. But the number of contracts concluded for each deal is not clear from this figure. There could be, for example, 50 one-lot orders or 50 hundred-lot orders. From this point of view, the tick volume does not reflect the true volume. However, it is still a valuable indicator because it is the only one that allows you to measure the volume with less delay, although at the expense of accuracy.
This is the main information on the TVI indicator, I had tinkered with it in many ways and found out how to use it. Because of this, Alerts and drawing arrows on the chart were added to signal the user about the possible entries.