That's what I was wondering, I'm thinking of tracking down whoever added that to...

justin66 · on Aug 11, 2017

I very strongly suspect that some confused person (or algorithm?) saw that that the level design tool Radiant has a "clipper" and ran with it.

microcolonel · on Aug 11, 2017

https://en.wikipedia.org/w/index.php?title=Id_Tech_5&diff=pr...

Hard to say, bots usually have usernames, so probably a person.

https://en.wikipedia.org/wiki/Special:Contributions/99.100.1...

They also seem to have added a similar section to the id Tech 6 article, it's possible they're just an insider.

https://en.wikipedia.org/w/index.php?title=2015&diff=prev&ol...

But looking at other edits from this address it sees like they might just be a vandal; or at least somebody who is very confused about how Wikipedia works.