ZigZag calculations: How do they work?

I am trying to work out how the ZigZag function works,
3 inputs:
InpDepth
InpDeviation
InpBackstep

InpBackstep is how many bars back do you look before triggering a new zigzag.
If you put in 3, then 3 bars need to go by before the program prints a potential new zigzag, etc.

The other 2 fields are a mystery, even though I have looked at the code.
(I have looked at Investopedia and Stackexchange as well!)

I guess the InpDeviation relates to how much the market should move to trigger a zigzag, as opposed to continue the existing one.
I dont get the "percentage" bit.
Percentage of what?
Percentage of previous zigzag?
Percentage of total price? (eg. 3% of 1.2000)

I am also guessing ZigZag is a proxy for Renko bricks or Point and Figure.
I do hope so, as my charts get screwed when I use Renko and PnF. (not to mention the CPU usage)
I was hoping Zigzag was a short-cut for Renko or PnF.

How does InpDeviation and InpDepth work? What do they mean?
Thanks.

This might help dude.

https://blog.roboforex.com/blog/2020...tings-and-use/

http://www.fxcorporate.com/help/MS/N.../i_ZigZag.html

https://www.mql5.com/en/articles/1537

Thanks for those links, swd.
The first blog link is more descriptive of the inputs.

Seems the Deviation AND Percentage can be inter-related.
I will need to further investigate this, and your post is greatly appreciated.

Wow thanks. The article by Mr Gryazin was particularly helpful. I've never used ZZ but I've always wondered how the parameter settings worked.