# 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."}
::

::product-features
  :::product-feature-item{title="CLI" icon="i-lucide-terminal" to="/docs/reference/cli"}
  Every command and flag.
  :::

  :::product-feature-item{title="Config file" icon="i-lucide-file-cog" to="/docs/reference/config"}
  Every field of `lumen.config.json`.
  :::

  :::product-feature-item{title="Exit codes" icon="i-lucide-hash" to="/docs/reference/exit-codes"}
  What each exit code means and what to do.
  :::

  :::product-feature-item{title="Changelog" icon="i-lucide-history" to="/changelog"}
  What changed in each release, on its own page with an RSS feed.
  :::
::