That'll be the Trivial Script, which switches between 2 different sets of a few files and is capable of editing a couple of settings. It does these things:

  1. Basic edits of preferences.txt
  2. Switch between various lighting settings and apply modesty patch if needed
  3. Switch between single- & multi- player versions of a few EB files like export_descr_units.txt Those files are found in EB/sp game edu backup/ and EB/mp game edu backup/ folders respectively.
  4. Launch the game with a number of configurable commandline parameters (e.g. -ne, -nm atop of -mod:eb)