Last value can be updated in realtime market, in simulation and when refreshing your web page.
Result range from 1 to 999.
Smoothing can be used to create charts (for exact PRNG results use smooth=1).
Can be useful in probability tests.
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.