VP Lite spreads each candle’s volume across its high-to-low price range, then adds it into rows. It estimates activity by price; it does not read every individual trade.
The gold line marks the middle of the row with the most estimated volume. The blue area grows around that row until it contains at least your selected percentage. Because whole rows are included, it can hold more than 70% at the default setting.
The profile can move. It is rebuilt as the live candle changes, new candles arrive, or the selected range changes. Earlier profiles and their lines are not saved automatically. Mark a reference level yourself if you want to track it.
Session has a limit: the volume calculation uses at most the latest 2,000 candles from the current trading day. The day follows the symbol’s daily boundary, which may differ from your local midnight.
Volume depends on your chart’s data. Forex and some CFDs may supply tick activity (price updates), rather than units traded. More rows cannot turn that data into exact trade-by-trade volume.
VP Lite maps where activity was concentrated — never what price will do next. It does not separate buying from selling, preserve old profiles, or send alerts.