The "Auto" mode will allow automatic adjustment of timeframe displayed according to your chart.
Otherwise you can select manually.
Indicator plots the open/close and colors the high-low range area in the background.
Hope this simple indicator will help you !
You can check my indicators via my TradingView's Profile : @PRO_Indicators
Added the optional plot of the 61% extension line (this extension generally acts like a support/resistance)
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.