diff --git a/wp-includes/version.php b/wp-includes/version.php
index 947300be67..e25fc2ba31 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-alpha-32638';
+$wp_version = '4.3-alpha-32639';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-includes/widgets.php b/wp-includes/widgets.php
index d41ce31712..9f7c1bcead 100644
--- a/wp-includes/widgets.php
+++ b/wp-includes/widgets.php
@@ -250,14 +250,21 @@ class WP_Widget {
 		$this->id = $this->id_base . '-' . $number;
 	}
 
+	/**
+	 * @return callback
+	 */
 	public function _get_display_callback() {
 		return array($this, 'display_callback');
 	}
-
+	/**
+	 * @return callback
+	 */
 	public function _get_update_callback() {
 		return array($this, 'update_callback');
 	}
-
+	/**
+	 * @return callback
+	 */
 	public function _get_form_callback() {
 		return array($this, 'form_callback');
 	}
@@ -273,6 +280,8 @@ class WP_Widget {
 	 * @since 3.9.0
 	 * @access public
 	 *
+	 * @global WP_Customize_Manager $wp_customize
+	 *
 	 * @return bool True if within the Customizer preview, false if not.
 	 */
 	public function is_preview() {
@@ -345,6 +354,8 @@ class WP_Widget {
 	 * @since 2.8.0
 	 * @access public
 	 *
+	 * @global array $wp_registered_widgets
+	 *
 	 * @param int $deprecated Not used.
 	 */
 	public function update_callback( $deprecated = 1 ) {
@@ -585,6 +596,8 @@ class WP_Widget_Factory {
 	 *
 	 * @since 2.8.0
 	 * @access public
+	 *
+	 * @global array $wp_registered_widgets
 	 */
 	public function _register_widgets() {
 		global $wp_registered_widgets;
@@ -632,15 +645,22 @@ $wp_registered_widgets = array();
  * @since 2.2.0
  */
 $wp_registered_widget_controls = array();
+/**
+ * @global array $wp_registered_widget_updates
+ */
 $wp_registered_widget_updates = array();
 
 /**
  * Private
+ *
+ * @global array $_wp_sidebars_widgets
  */
 $_wp_sidebars_widgets = array();
 
 /**
  * Private
+ *
+ * @global array $_wp_deprecated_widgets_callbacks
  */
 $GLOBALS['_wp_deprecated_widgets_callbacks'] = array(
 	'wp_widget_pages',
@@ -677,8 +697,8 @@ $GLOBALS['_wp_deprecated_widgets_callbacks'] = array(
  * @since 2.8.0
  *
  * @see WP_Widget
- * @see WP_Widget_Factory
- * @uses WP_Widget_Factory
+ *
+ * @global WP_Widget_Factory $wp_widget_factory
  *
  * @param string $widget_class The name of a class that extends WP_Widget
  */
@@ -697,8 +717,8 @@ function register_widget($widget_class) {
  * @since 2.8.0
  *
  * @see WP_Widget
- * @see WP_Widget_Factory
- * @uses WP_Widget_Factory
+ *
+ * @global WP_Widget_Factory $wp_widget_factory
  *
  * @param string $widget_class The name of a class that extends WP_Widget
  */
@@ -719,6 +739,8 @@ function unregister_widget($widget_class) {
  *
  * @see register_sidebar() The second parameter is documented by register_sidebar() and is the same here.
  *
+ * @global array $wp_registered_sidebars
+ *
  * @param int          $number Optional. Number of sidebars to create. Default 1.
  * @param array|string $args {
  *     Optional. Array or string of arguments for building a sidebar.
@@ -851,7 +873,7 @@ function register_sidebar($args = array()) {
  *
  * @since 2.2.0
  *
- * @uses $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
+ * @global array $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
  *
  * @param string $name The ID of the sidebar when it was added.
  */
@@ -873,6 +895,8 @@ function unregister_sidebar( $name ) {
  *
  * @global array $wp_registered_widgets       Uses stored registered widgets.
  * @global array $wp_register_widget_defaults Retrieves widget defaults.
+ * @global array $wp_registered_widget_updates
+ * @global array $_wp_deprecated_widgets_callbacks
  *
  * @param int|string $id              Widget ID.
  * @param string     $name            Widget display title.
@@ -885,7 +909,6 @@ function unregister_sidebar( $name ) {
  *     @type string $description Widget description for display in the widget administration
  *                               panel and/or theme.
  * }
- * @return null Will return if `$output_callback` is empty after removing widget.
  */
 function wp_register_sidebar_widget( $id, $name, $output_callback, $options = array() ) {
 	global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates, $_wp_deprecated_widgets_callbacks;
@@ -937,8 +960,10 @@ function wp_register_sidebar_widget( $id, $name, $output_callback, $options = ar
  *
  * @since 2.5.0
  *
+ * @global array $wp_registered_widgets
+ *
  * @param int|string $id Widget ID.
- * @return string Widget description, if available. Null on failure to retrieve description.
+ * @return string|void Widget description, if available.
  */
 function wp_widget_description( $id ) {
 	if ( !is_scalar($id) )
@@ -958,8 +983,10 @@ function wp_widget_description( $id ) {
  *
  * @since 2.9.0
  *
+ * @global array $wp_registered_sidebars
+ *
  * @param string $id sidebar ID.
- * @return string Sidebar description, if available. Null on failure to retrieve description.
+ * @return string|void Sidebar description, if available.
  */
 function wp_sidebar_description( $id ) {
 	if ( !is_scalar($id) )
@@ -1008,6 +1035,11 @@ function wp_unregister_sidebar_widget($id) {
  * @todo Document `$options` as a hash notation, re: WP_Widget::__construct() cross-reference.
  * @todo `$params` parameter?
  *
+ * @global array $wp_registered_widget_controls
+ * @global array $wp_registered_widget_updates
+ * @global array $wp_registered_widgets
+ * @global array $_wp_deprecated_widgets_callbacks
+ *
  * @param int|string   $id               Sidebar ID.
  * @param string       $name             Sidebar display name.
  * @param callback     $control_callback Run when sidebar is displayed.
@@ -1059,8 +1091,8 @@ function wp_register_widget_control( $id, $name, $control_callback, $options = a
 }
 
 /**
- *
  * @global array $wp_registered_widget_updates
+ *
  * @param string   $id_base
  * @param callable $update_callback
  * @param array    $options
@@ -1086,11 +1118,11 @@ function _register_widget_update_callback($id_base, $update_callback, $options =
 /**
  *
  * @global array $wp_registered_widget_controls
+ *
  * @param int|string $id
  * @param string     $name
  * @param callable   $form_callback
  * @param array      $options
- * @return null
  */
 function _register_widget_form_callback($id, $name, $form_callback, $options = array()) {
 	global $wp_registered_widget_controls;
@@ -1129,7 +1161,7 @@ function _register_widget_form_callback($id, $name, $form_callback, $options = a
  * @param int|string $id Widget ID.
  */
 function wp_unregister_widget_control($id) {
-	return wp_register_widget_control($id, '', '');
+	wp_register_widget_control( $id, '', '' );
 }
 
 /**
@@ -1141,6 +1173,9 @@ function wp_unregister_widget_control($id) {
  *
  * @since 2.2.0
  *
+ * @global array $wp_registered_sidebars
+ * @global array $wp_registered_widgets
+ *
  * @param int|string $index Optional, default is 1. Index, name or ID of dynamic sidebar.
  * @return bool True, if widget sidebar was found and called. False if not found or not called.
  */
@@ -1300,10 +1335,7 @@ function dynamic_sidebar($index = 1) {
 	 *                            Default false.
 	 * @param int|string $index   Index, name, or ID of the dynamic sidebar.
 	 */
-
-	$did_one = apply_filters( 'dynamic_sidebar_has_widgets', $did_one, $index );
-
-	return $did_one;
+	return apply_filters( 'dynamic_sidebar_has_widgets', $did_one, $index );
 }
 
 /**
@@ -1321,11 +1353,13 @@ function dynamic_sidebar($index = 1) {
  *
  * @since 2.2.0
  *
- * @param string $callback Optional, Widget callback to check.
- * @param int $widget_id Optional, but needed for checking. Widget ID.
- * @param string $id_base Optional, the base ID of a widget created by extending WP_Widget.
- * @param bool $skip_inactive Optional, whether to check in 'wp_inactive_widgets'.
- * @return mixed false if widget is not active or id of sidebar in which the widget is active.
+ * @global array $wp_registered_widgets
+ *
+ * @param string $callback      Optional, Widget callback to check.
+ * @param int    $widget_id     Optional, but needed for checking. Widget ID.
+ * @param string $id_base       Optional, the base ID of a widget created by extending WP_Widget.
+ * @param bool   $skip_inactive Optional, whether to check in 'wp_inactive_widgets'.
+ * @return string|false False if widget is not active or id of sidebar in which the widget is active.
  */
 function is_active_widget($callback = false, $widget_id = false, $id_base = false, $skip_inactive = true) {
 	global $wp_registered_widgets;
@@ -1356,6 +1390,9 @@ function is_active_widget($callback = false, $widget_id = false, $id_base = fals
  *
  * @since 2.2.0
  *
+ * @global array $wp_registered_widgets
+ * @global array $wp_registered_sidebars
+ *
  * @return bool True, if using widgets. False, if not using widgets.
  */
 function is_dynamic_sidebar() {
@@ -1407,6 +1444,9 @@ function is_active_sidebar( $index ) {
  * @since 2.2.0
  * @access private
  *
+ * @global array $_wp_sidebars_widgets
+ * @global array $sidebars_widgets
+ *
  * @param bool $deprecated Not used (argument deprecated).
  * @return array Upgraded list of widgets to version 3 array format when called from the admin.
  */
@@ -1437,8 +1477,7 @@ function wp_get_sidebars_widgets( $deprecated = true ) {
 	 *
 	 * @param array $sidebars_widgets An associative array of sidebars and their widgets.
 	 */
-	$sidebars_widgets = apply_filters( 'sidebars_widgets', $sidebars_widgets );
-	return $sidebars_widgets;
+	return apply_filters( 'sidebars_widgets', $sidebars_widgets );
 }
 
 /**
@@ -1461,6 +1500,8 @@ function wp_set_sidebars_widgets( $sidebars_widgets ) {
  * @since 2.2.0
  * @access private
  *
+ * @global array $wp_registered_sidebars
+ *
  * @return array
  */
 function wp_get_widget_defaults() {
@@ -1479,6 +1520,8 @@ function wp_get_widget_defaults() {
  *
  * @since 2.8.0
  *
+ * @global array $_wp_sidebars_widgets
+ *
  * @param string $base_name
  * @param string $option_name
  * @param array  $settings
@@ -1540,6 +1583,8 @@ function wp_convert_widget_settings($base_name, $option_name, $settings) {
  *
  * @since 2.8.0
  *
+ * @global WP_Widget_Factory $wp_widget_factory
+ *
  * @param string $widget   The widget's PHP class name (see default-widgets.php).
  * @param array  $instance Optional. The widget's instance settings. Default empty array.
  * @param array  $args {
@@ -1586,6 +1631,8 @@ function the_widget( $widget, $instance = array(), $args = array() ) {
 
 /**
  * Private
+ *
+ * @return string
  */
 function _get_widget_id_base($id) {
 	return preg_replace( '/-[0-9]+$/', '', $id );
@@ -1596,6 +1643,8 @@ function _get_widget_id_base($id) {
  *
  * @access private
  * @since 3.3.0
+ *
+ * @global array $sidebars_widgets
  */
 function _wp_sidebars_changed() {
 	global $sidebars_widgets;
@@ -1611,9 +1660,13 @@ function _wp_sidebars_changed() {
  *
  * @since 2.8.0
  *
+ * @global array $wp_registered_sidebars
+ * @global array $sidebars_widgets
+ * @global array $wp_registered_widgets
+ *
  * @param string|bool $theme_changed Whether the theme was changed as a boolean. A value
  *                                   of 'customize' defers updates for the Customizer.
- * @return array
+ * @return array|void
  */
 function retrieve_widgets( $theme_changed = false ) {
 	global $wp_registered_sidebars, $sidebars_widgets, $wp_registered_widgets;