How to use:
If the Aqua( ) line passes upwards on the red heading to the white - it's heading towards a good BUY signal. To be safe you wait until it passes above the white line, then BUY LONG. Another signal to buy long is when the Aqua line passes above the white and green lines.
Selling is essentially the opposite, if the Aqua line is passing down from the green or white lines, then it's time to sell and exit your trade.
This indicator works well as a confirmation, and it's nice to have multiple confirmations, so it's suggested you use this with other indicators that can provide entry and exit confirmations.
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.