OPEN-SOURCE SCRIPT
Four Block Zone - Oliver Velez
This is pretty straight forward indicator as explained by Oliver Velez ... Be bullish if price crosses upper band and bearish if crosses lower band.. that's it.
Open-source script
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 publication is governed by House rules. You can favorite it to use it on a chart.
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