**NOTE:** The `meta-agl` layer does not include a reference UI.
The reference UI is included as part of the
- [`meta-agl-demo`](3_meta-agl-demo.md) layer.
+ [`meta-agl-demo`](03_meta_agl_demo.md) layer.
Furthermore, `meta-agl` does not include additional components, such
as security, which are part of the
`meta-agl-extra` layer.
## Packagegroups
This section describes the AGL
-[packagegroup](https://yoctoproject.org/docs/3.1.4/dev-manual/dev-manual.html#usingpoky-extend-customimage-customtasks)
+[packagegroup](https://docs.yoctoproject.org/dev-manual/common-tasks.html#customizing-images-using-custom-package-groups)
design:
* packagegroup-agl-image-minimal
* packagegroup-agl-test.bb
Additional tools used in QA tests (for agl-image*-qa).
-