The related article is copyrighted material from Stocks & Commodities Mar 2010 You can use in the xPrice any series: Open, High, Low, Close, HL2, HLC3, OHLC4 and ect...
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 publications is governed by House rules. 您可以收藏它以在圖表上使用。