post!

site/posts/differential-review-4-and-5.html

@@ -1,5 +1,8 @@
 [!]
 [=post-]
+<p>
+    <i>This is part of a series. You can read the next post <a href="[^baseurl]/posts/differential-review-6.html">here</a>.</i>
+</p>
 <p>
     Hello, dear readers! This post is a bit strange, even by Deadly Boring standards; because of an exam on June 9th I was unable to write the week 4 review,
     so this post covers all of week 4 and week 5 together.