line 1 => "Total Up Impulses": the sum of up impulses.
line 2 => "Total Down Impulses": the sum of down impulses.
When line 1 crosses up line 2, it indicates an uptrend is comming out.
When line 1 crosses down line 2, it indicates a downtrend is comming out.
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.