Walid Khalil and David Steckler presented the Volume Zone Oscillator (VZO) indicator in 2009 in the journal IFTA (International Federation of Technical Analysis), and then in the journal and a follow-up in Technical Analysis of Stocks and Commodities in May 2011.

• Algo Selection: the choice of using the original algorithm or my author’s exclusive alternative option.
• Signal Period: the number of bars or candles used for calculations.
• Line Level: The level of the dotted line. Default is 60/-60
• Select Mode: select the averaging method. The original algorithm uses an exponential average.
• Max Boundaries: zoom in or out with the center set to 0.