A format for specifying Minecraft modpacks, designed to be easy to manipulate with tools.
You probably want to start with the [[Pack]]. The pack file defines properties of the modpack as a whole, and references the index file (if there are no changes in the index file it doesn't need to be downloaded).
The [[Index]] file references every file in the modpack. This file is typically generated using a tool like packwiz.
The [[Mod]] file defines a mod... !!
This modpack format is heavily inspired by the manifest format of Scoop and by PackUpdate.
All the files are generated using updateAllFiles.js from the JSON files in the metadata/ folders and the TOML files in the examples/ folders.