diff --git a/book/_toc.yml b/book/_toc.yml
index ffebe94..abecdbf 100644
--- a/book/_toc.yml
+++ b/book/_toc.yml
@@ -17,7 +17,6 @@ parts:
       - file: exercises/005a.md
       - file: exercises/006.md
       - file: exercises/summary
-      - external: https://github.com/TeachBooks/manual/blob/v1.1.1/book/examples/overview.md
     - file: syntax_exercises.md
       sections:
       - file: syntax_exercises/007.md
diff --git a/book/exercises/005a.md b/book/exercises/005a.md
index 06dcb19..f1de3f6 100644
--- a/book/exercises/005a.md
+++ b/book/exercises/005a.md
@@ -52,7 +52,15 @@ Can you include a page from someone else’s book into your own using `external:
 
 7. Do you see your change? If you don't see it click `CTRL`+`F5`/`Control`+`F5`to refresh the page.
 
+8. When viewing your book online, open the reused page. At the top, you should see an **attribution box**. This confirms the external content is working correctly and shows where it was sourced from. 
 
+```{figure} ..\figures\external_page_attribution.png
+:name: external_page_attribution
+:width: 100%
+:alt: Attribution box shown at the top of an external page
+
+Attribution box that appears at the top of an external page.
+```
 
 ```{admonition} Check your understanding
 :class: note
diff --git a/book/figures/external_page_attribution.png b/book/figures/external_page_attribution.png
new file mode 100644
index 0000000..86d8286
Binary files /dev/null and b/book/figures/external_page_attribution.png differ