> For the complete documentation index, see [llms.txt](https://yellow-umbrella.gitbook.io/yellow-umbrella/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yellow-umbrella.gitbook.io/yellow-umbrella/02-background.md).

# 2. Background and Overview

- [The Need for YU Token](https://yellow-umbrella.gitbook.io/yellow-umbrella/02-background/demand.md)
- [Use Cases of YU Token](https://yellow-umbrella.gitbook.io/yellow-umbrella/02-background/where-to-use.md)
- [Core Values and Vision](https://yellow-umbrella.gitbook.io/yellow-umbrella/02-background/vision.md)