diff --git a/documentation/ref-manual/ref-structure.xml b/documentation/ref-manual/ref-structure.xml
index f378419127..4dab4f0323 100644
--- a/documentation/ref-manual/ref-structure.xml
+++ b/documentation/ref-manual/ref-structure.xml
@@ -27,7 +27,12 @@
 </note>
 
 <section id='structure-core'>
-    <title>Top level core components</title>
+    <title>Top-Level Core Components</title>
+
+    <para>
+        This section describes the top-level components of the
+        <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>.
+    </para>
 
     <section id='structure-core-bitbake'>
         <title><filename>bitbake/</filename></title>