This indicator is a sessions indicator that will plot the high and low of the previously closed Asia, London and New York sessions. Once the current session has closed, you will see new lines for that session be plotted for new levels to consider for the following trading period. The opening and closing of each session is a reactive spot for price action and can help you determine where manipulation is likely to occur. No matter the session you're trading, the levels from each of the other sessions is still significant and should be considered for price manipulation.
This indicator is different than others in the sense that it is simple in layout and doesn't detract with large shadows over the candles, but instead horizontal lines for those sessions. You can customize the thickness of the horizontal session line within the settings, as well as if you'd prefer to have the background present as a shadow or not.
Past sessions are visualized with one simple dot, just for reference.