diff --git a/src/wp-includes/default-widgets.php b/src/wp-includes/default-widgets.php
index 184159af26..0cf5fc336b 100644
--- a/src/wp-includes/default-widgets.php
+++ b/src/wp-includes/default-widgets.php
@@ -1,21 +1,47 @@
 <?php
 /**
- * Default Widgets
+ * Widget API: Default core widgets
  *
  * @package WordPress
  * @subpackage Widgets
+ * @since 2.8.0
  */
 
+/** WP_Widget_Pages class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-pages.php' );
+
+/** WP_Widget_Links class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-links.php' );
+
+/** WP_Widget_Search class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-search.php' );
+
+/** WP_Widget_Archives class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-archives.php' );
+
+/** WP_Widget_Meta class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-meta.php' );
+
+/** WP_Widget_Calendar class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-calendar.php' );
+
+/** WP_Widget_Text class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-text.php' );
+
+/** WP_Widget_Categories class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-categories.php' );
+
+/** WP_Widget_Recent_Posts class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-recent-posts.php' );
+
+/** WP_Widget_Recent_Comments class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-recent-comments.php' );
+
+/** WP_Widget_RSS class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-rss.php' );
+
+/** WP_Widget_Tag_Cloud class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-widget-tag-cloud.php' );
+
+/** WP_Nav_Menu_Widget class */
 require_once( ABSPATH . WPINC . '/widgets/class-wp-nav-menu-widget.php' );