They are extra programs to add extra stability to the game when heavily modded. It goes hand in hand with vortex, just a real big pain in the ass because when I mod using vortex I get a little too over zealous with the mods. It also allows you to merge mods together to further increase the amount of mods because you’re capped at a certain number. It gets to be a bit much, and I was controlling myself from that inevitably.