Port content from #1275

Author: stevepiercy

docs/classic-ui/mockup.md

@@ -4,7 +4,7 @@ myst:
     "description": "Mockup together with Patternslib are used to build the UI toolkit for Classic UI, a frontend for Plone."
     "property=og:description": "Mockup together with Patternslib are used to build the UI toolkit for Classic UI, a frontend for Plone."
     "property=og:title": "Mockup and Patternslib"
-    "keywords": "Mockup, Patternslib, Classic UI, frontend, Plone"
+    "keywords": "Mockup, Patternslib, Classic UI, plonecli, bobtemplates.plone, mr.bob, frontend, Plone"
 ---
 
 (mockup-and-patternslib-label)=
@@ -15,4 +15,27 @@ myst:
 
 View the [interactive documentation of Mockup](https://plone.github.io/mockup/).
 
-For more information, visit the [Mockup repository on GitHub](https://github.com/plone/mockup).
+
+## Get started
+
+[bobtemplates.plone](https://github.com/plone/bobtemplates.plone) provides [mr.bob](https://mrbob.readthedocs.io/en/latest/) templates to generate packages for Plone projects.
+[plonecli](https://github.com/plone/plonecli) provides a command line client for bobtemplates.plone.
+
+Install plonecli into your Python user packages to make it available to all your projects.
+
+```shell
+pip install plonecli --user
+```
+
+Create a theme package add-on with {term}`plonecli`.
+
+```shell
+plonecli add mockup_pattern
+```
+
+
+## References
+
+-   {ref}`v60-mockup-resource-registry-label` in Plone 6.0
+-   [Mockup repository on GitHub](https://github.com/plone/mockup)
+-   [Patternslib](https://patternslib.com/)