This is a fairly basic version currently, with new added features coming in future updates such as range between high/low and half and whole number detection.
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.