diff --git a/Writerside/d.tree b/Writerside/d.tree
index 6b0cf1e..3cd3513 100644
--- a/Writerside/d.tree
+++ b/Writerside/d.tree
@@ -7,4 +7,15 @@
                  start-page="main.md">
 
     <toc-element topic="main.md"/>
+    <toc-element toc-title="Kernel">
+        <toc-element toc-title="Device Tree">
+
+        </toc-element>
+    </toc-element>
+    <toc-element toc-title="U-Boot">
+    </toc-element>
+    <toc-element toc-title="Odroid">
+    </toc-element>
+    <toc-element toc-title="About">
+    </toc-element>
 </instance-profile>
\ No newline at end of file