**NOTE:** The `meta-agl` layer does not include a reference UI.
The reference UI is included as part of the
- [`meta-agl-demo`](./meta-agl-demo.html) layer.
+ [`meta-agl-demo`](3_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/ 3.1.2/dev-manual/dev-manual.html#usingpoky-extend-customimage-customtasks)
+[packagegroup](https://yoctoproject.org/docs/3.1.2/dev-manual/dev-manual.html#usingpoky-extend-customimage-customtasks)
design:
* packagegroup-agl-image-minimal