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Casual BSP Modification
- A Question for Team Fortress 2.

My understanding so far is that you can modify the map file itself via mods, like how they made the Saxton model mods. I remember seeing a post explaining it a while back but I can't find it now, I'm trying to learn how to make mods like this one. Considering how new and niche this is I can't find resources on how to do it. Or I'm just blind.