The length is adapted by
- tightening as the source and output distance grow
- loosening when the output has caught up.
Can be used "indicator on indicator" as a smoother or stabilizer.
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.