diff --git a/doc/_templates/index.html b/doc/_templates/index.html
index 8d3016c13..0b7cbc56f 100644
--- a/doc/_templates/index.html
+++ b/doc/_templates/index.html
@@ -44,6 +44,10 @@
     You can also download a <a href="http://sphinx.pocoo.org/sphinx.pdf">PDF version</a>
     of the Sphinx documentation, generated from the LaTeX Sphinx produces.
   </p>
+  <p>
+    For examples of how Sphinx source files look, use the &#8220;Show source&#8221;
+    links on all pages of the documentation apart from this welcome page.
+  </p>
   <p>Links to more documentation generated with Sphinx can be found on the
     <a href="{{ pathto("examples") }}">Projects using Sphinx</a> page.
   </p>