In the example, the 1H time frame is being used for entries using the 4H time frame (8 candles width = 2 4H candles) as the trading time frame and the (48 candles width = 2 daily candles) as the higher time frame.
This allows one to visually higher time frame Fibonacci swings and allows them to accurately perform Fibonacci analysis without having to switch to a higher time frame
The main reason is you may want to trading the 1H chart with the 4H chart as your higher time frame but still want to see the daily chart pivots
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.