I don't think they were "created" at all, rather an unforseen consequence of the code. Could be wrong, but either way to use snap zones, you have to understand them first. You should start (and probably end) with this forum https://www.q3df.org/forum/viewtopic.php?p=3516 . But in any case, this will not carry over even from q3 defrag to vq3, let alone qc. And I mean AT ALL, completely different emphasis. Furthermore, I don't even know if half the defraggers use snapping.

http://www.i-m.mx/q3inder/q3inder/strafe-jumping.html
https://m.youtube.com/watch?v=_umLFyNH4T4&...YXBodWQ%3D

These might help. Although if your timezone is Moscow because you are russian, it's probably easier to go into the df discord and ask, I think there was an in-depth video tutorial in russian (maybe by HoX, not sure) around.

But I reiterate, those will not help in qc (if snap zones even exist there) because snapping, I think, is applicable at speeds above 1000 ups. Basically only the top strafers use it, the top weapons defraggers maybe can but do not bother with the strafe maps it's geared for.

It's very cool and you should learn it, because you should be playing defrag, not qc.

Thanks for the insights. I'm more into aiming than movement however I'm trying my best to be good at both. Maybe if I will get bored with QC and Quake Live (which I am about to try) I will go in-depth into defrag but as of now I'm just trying to get good at circlejumps and bhopping :)

Good defrag cj's are bad frag cj's. Frag movement is about immediate action and unpredictability. GL.

Ye, it was Hox.

https://www.youtube.com/watch?v=I8JvWX88Cik