You can run simple batch scripts in-game using the Console Command run [filename].txt if the file is placed in your main EU4 directory. Recommended Tools
These are used for events, countries, and decisions. They use a bracketed syntax (e.g., scope = { effect = { ... } } ). Europa Universalis 7z
: Right-click your .eu4 save file and use 7-Zip to "Extract files...". You can run simple batch scripts in-game using
: Essential for opening and creating the compressed archives used by the game. Europa Universalis 7z