I was messing around with the configs in the console, and noticed that two additional commands were attributed that I couldn't figure out the purpose of. "infil_nearby" and "infil_nearby_teams"

I tried every integer between 0 and 10, and I went as far as to try setting it as a playermodel to see if that did anything.

Running them as if they were commands, I get what appears to be an error message, with a tagline "( def. 1 )" unless they're set to 1.

I'm not familiar with the behind the scenes part of modding, so I don't know what to make of this.

Can anybody tell me what this is?