diff --git a/include/toolbox.html b/include/toolbox.html
index 732db08..970c948 100644
--- a/include/toolbox.html
+++ b/include/toolbox.html
@@ -74,7 +74,7 @@
   can be found <a href="@@edit-point-control">here</a>.
 </p>
 
-<h2>The <em>Smart</em> mode toggle switch</h2>
+<h2 id="smart-mode">The <em>Smart</em> mode toggle switch</h2>
 
 <p>
   The <dfn>Smart Mode</dfn> toggle button (shortcut: <kbd>y</kbd>) to the left
@@ -85,7 +85,7 @@
   two modes.
 </p>
 
-<h2>Mouse Modes</h2>
+<h2 id="mouse-modes">Mouse Modes</h2>
 
 <p>
   Editing <a href="@@working-with-regions">regions</a> and their contents