It consists of 2 moving averages with one of them being multiplied by a chosen number. When the lower moving average crosses the higher (with multiple) moving average, the bull market top is indicated.
The original indicator showed bull market tops within a 3 day accuracy. This version shows the exact tops on the exact day for 2013 and 2017.
There are 7 different perfect solution shown as a band in this modified indicator. Each solution is a color pair and can be viewed separately by turning each combination off or on in the settings.
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.