HTF High/Low/Open Ranges

HTF High/Low/Open Ranges is an indicator designed to visualize higher-timeframe (HTF) ranges on lower-timeframe charts.
It automatically groups candles by the selected timeframe (15m, 1H, 4H, Daily, Weekly) and plots:

the High level of the range,
the Low level of the range,
the Open level of the range,
vertical lines marking the start of each new HTF period.
Тime offset support (useful for New York / London sessions).

How to use
Use HTF High / Low as key liquidity and price reaction levels.
HTF Open often acts as an intraday equilibrium level.
Vertical lines help visually track transitions between trading periods.