This probably doesn't work anymore, but just info for people who don't know how to read / find arguments ( it says how on 1st page).
1) download process explorer
2) run process explorer
3) click "view" then click "select columns"
4) click command line
5) run your cabal private server game
6) go back to process explorer
7) look for cabalmain.exe
8) argument is after "cabalmain.exe" under the command line column.
For example, the argument for Sky Cabal is : ta33m