# Documentation Index

* [build.md](build.md) contains a detailed description on how the
  build system works.
* [layers.md](layers.md) contains a listing and description of the
  available configuration layers and products in the build system.
* [filesystem.md](filesystem.md) contains an outline of the filesystem
  in the target image.
* [boot.md](boot.md) contains a description on how the system boots and
  mounts the filesystem root.
* [update.md](update.md) does not yet contain a description on how the
  system is intended to safely update itself during operation.