Opening lines can be used to monitor for power of 3/judas swings as per ICT teachings. The script allows the user to set a maximum timeframe for displaying the lines to keep HTF charts clean. Also an option is available to hide the lines after the market closes. If the hide option is used, the lines will be removed at 23:00.
Removing the lines after market closes ensures that the charts are clean when the market opens.
Labels can be displayed, colors and line styles can be customised.
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.