> For the complete documentation index, see [llms.txt](https://docs.langx.io/litepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.langx.io/litepaper/library.md).

# Library

- [Badges](https://docs.langx.io/litepaper/library/badges.md): An overview of the different badges available in our community, their significance, and the benefits they offer.
- [Notifications](https://docs.langx.io/litepaper/library/notifications.md): What LangX sends you, when it sends it, and how to turn any of it off — per kind and per channel.
- [Day Streaks](https://docs.langx.io/litepaper/library/day-streaks.md): How day streaks work, what keeps one alive, and how to rescue a day you missed.
- [LangX Copilot](https://docs.langx.io/litepaper/library/language-copilot.md): An introduction to LangX Copilot, an AI-powered tool designed to enhance your language learning experience with personalized feedback and privacy-focused features.
- [Coming Back From the Old App](https://docs.langx.io/litepaper/library/coming-back.md): Had a LangX account before the new app? Your profile, username, streak and tokens are waiting — here is how to get back in.