Where in the SRB2Kart source code do mods get loaded in?

[Benji]

I want to try to fix the map ID system by assigning the IDs as they load instead of using the hard coded IDs. With about 33 map IDs left, I decided doing something is better than nothing. I have very little experience with how SRB2Kart works.

Update: New question, where in the source code is the SOC read when a mod loads?