Document `.cabal/config`

I just learned, via haskell-cafe, that I could say `jobs: 4` in my `~/.cabal/config` file to make my life better. I wish this had been in the documentation! (It's not at https://www.haskell.org/cabal/users-guide/ or anywhere underneath, that I could find.) Are there other options lurking undocumented in that file (such as `ghc-options`)?

Thanks!