> For the complete documentation index, see [llms.txt](https://docs.r3vl.xyz/reveel-protocol-v2-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.r3vl.xyz/reveel-protocol-v2-documentation/protocol-concepts.md).

# Protocol Concepts

- [Tiers](https://docs.r3vl.xyz/reveel-protocol-v2-documentation/protocol-concepts/tiers.md)
- [Mutable Revenue Paths](https://docs.r3vl.xyz/reveel-protocol-v2-documentation/protocol-concepts/mutable-revenue-paths.md)
- [Path Manager](https://docs.r3vl.xyz/reveel-protocol-v2-documentation/protocol-concepts/path-manager.md)
- [Platform Fee](https://docs.r3vl.xyz/reveel-protocol-v2-documentation/protocol-concepts/platform-fee.md)
- [Meta Transactions](https://docs.r3vl.xyz/reveel-protocol-v2-documentation/protocol-concepts/meta-transactions.md)