diff --git a/src/tools/backend/backend_dirs.html b/src/tools/backend/backend_dirs.html
index 3ef940f0ca1c377b65b42bf0adef6edf7f23d53a..c5bd3a52fe2919236bc4be0e36dae453f9ad7aed 100644
--- a/src/tools/backend/backend_dirs.html
+++ b/src/tools/backend/backend_dirs.html
@@ -9,6 +9,11 @@ PostgreSQL Backend Directories
 <H2 ALIGN=CENTER>
 by Bruce Momjian
 </H2 ALIGN=CENTER>
+<P>
+<P>
+<EM>Click on any of the section headings to see the source code for that section.
+</EM>
+<P>
 <H2>
 <A NAME="bootstrap">
 <A HREF="../../backend/bootstrap">bootstrap</A></A>