> For the complete documentation index, see [llms.txt](https://swopple.gitbook.io/swop/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swopple.gitbook.io/swop/major-concepts.md).

# Major Concepts

- [Swop.ID](https://swopple.gitbook.io/swop/major-concepts/swop.id.md): show in wallet
- [Parent Profile](https://swopple.gitbook.io/swop/major-concepts/parent-profile.md): show in app
- [NFC](https://swopple.gitbook.io/swop/major-concepts/nfc.md)
- [Messenger](https://swopple.gitbook.io/swop/major-concepts/messenger.md): show in app
- [Smartsite](https://swopple.gitbook.io/swop/major-concepts/smartsite.md)
- [Followers](https://swopple.gitbook.io/swop/major-concepts/followers.md)
- [Feed](https://swopple.gitbook.io/swop/major-concepts/feed.md)
- [Order Flow](https://swopple.gitbook.io/swop/major-concepts/order-flow.md)