Lines Plotted at the opening price of London, New York, New York Stock Exchange, and Asia. It could also plot lines of the closing price of the session.
The script is just plotting a line at those levels to give us a visual indicator of those specific levels as they could be very beneficial for your trading. Opening and closing of the session hold the most liquidity, attracting the market towards it.
I hope this script will help you in your trading and you can use those levels along with other confluences in order to identify key levels that the market could react from!
There are some similar scripts but this one have more lines to plot at could be identified by different color and line thickness!