# Reference

The reference lists every part of Lumen 1.4. The guides explain how to use them together.

::illustration{name="reference" alt="A drawer cabinet of flags, a stack of books, a config sheet, and an exit-code status tower."}
::

### [CLI](https://docs-demo.vitehub.dev/docs/reference/cli)

Every command and flag.

### [Config file](https://docs-demo.vitehub.dev/docs/reference/config)

Every field of `lumen.config.json`.

### [Exit codes](https://docs-demo.vitehub.dev/docs/reference/exit-codes)

What each exit code means and what to do.

### [Changelog](https://docs-demo.vitehub.dev/changelog)

What changed in each release, on its own page with an RSS feed.

<!-- vitehub-docs:section-links -->
## In this section

- [Overview](https://docs-demo.vitehub.dev/raw/docs/reference.md) (this page)
- [CLI](https://docs-demo.vitehub.dev/raw/docs/reference/cli.md)
- [Config file](https://docs-demo.vitehub.dev/raw/docs/reference/config.md)
- [Exit codes](https://docs-demo.vitehub.dev/raw/docs/reference/exit-codes.md)
- [Changelog](https://docs-demo.vitehub.dev/raw/docs/reference/changelog.md)

Next: [CLI](https://docs-demo.vitehub.dev/raw/docs/reference/cli.md)

All pages: [llms.txt](https://docs-demo.vitehub.dev/llms.txt)