diff --git a/action.php b/action.php
index 3b5d4a9..88d04bc 100644
--- a/action.php
+++ b/action.php
@@ -18,6 +18,22 @@ class action_plugin_tabpage extends DokuWiki_Action_Plugin {
 	 * @param Doku_Event_Handler $controller
 	 */
 	public function register(Doku_Event_Handler $controller) {
-		trigger_error('register() not implemented in '.get_class($this), E_USER_WARNING);
+		$controller->register_hook('MENU_ITEMS_ASSEMBLY', 'AFTER', $this, 'addMenuItem');
+	}
+
+	/**
+	 * Add new items to the page menu
+	 *
+	 * @param Doku_Event $event
+	 */
+	public function addMenuItem(Doku_Event $event) {
+		// Check that this method has been called in the expected context
+		if ( $event->name !== 'MENU_ITEMS_ASSEMBLY' ) {
+			$message = "Tabpage plugin error:";
+			$message .= "addMenuItem method should only be called by \"MENU_ITEMS_ASSEMBLY\" event";
+			$message .= ", but it has been called by \"$event->name\".";
+			throw new Exception($message);
+		}
+		trigger_error('addMenuItem() not implemented in '.get_class($this), E_USER_WARNING);
 	}
 }