diff --git a/src/wp-admin/includes/plugin.php b/src/wp-admin/includes/plugin.php
index 7774ddf798..83de6b68e9 100644
--- a/src/wp-admin/includes/plugin.php
+++ b/src/wp-admin/includes/plugin.php
@@ -1004,6 +1004,11 @@ function uninstall_plugin($plugin) {
  * The function which is hooked in to handle the output of the page must check
  * that the user has the required capability as well.
  *
+ * @global array $menu
+ * @global array $admin_page_hooks
+ * @global array $_registered_pages
+ * @global array $_parent_pages
+ *
  * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
  * @param string $menu_title The text to be used for the menu
  * @param string $capability The capability required for this menu to be displayed to the user.
@@ -1062,6 +1067,8 @@ function add_menu_page( $page_title, $menu_title, $capability, $menu_slug, $func
  * The function which is hooked in to handle the output of the page must check
  * that the user has the required capability as well.
  *
+ * @global int $_wp_last_object_menu
+ *
  * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
  * @param string $menu_title The text to be used for the menu
  * @param string $capability The capability required for this menu to be displayed to the user.
@@ -1088,6 +1095,8 @@ function add_object_page( $page_title, $menu_title, $capability, $menu_slug, $fu
  * The function which is hooked in to handle the output of the page must check
  * that the user has the required capability as well.
  *
+ * @global int $_wp_last_utility_menu
+ *
  * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
  * @param string $menu_title The text to be used for the menu
  * @param string $capability The capability required for this menu to be displayed to the user.
@@ -1114,6 +1123,13 @@ function add_utility_page( $page_title, $menu_title, $capability, $menu_slug, $f
  * The function which is hooked in to handle the output of the page must check
  * that the user has the required capability as well.
  *
+ * @global array $submenu
+ * @global array $menu
+ * @global type $_wp_real_parent_file
+ * @global bool $_wp_submenu_nopriv
+ * @global array $_registered_pages
+ * @global array $_parent_pages
+ *
  * @param string $parent_slug The slug name for the parent menu (or the file name of a standard WordPress admin page)
  * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
  * @param string $menu_title The text to be used for the menu
@@ -1124,12 +1140,8 @@ function add_utility_page( $page_title, $menu_title, $capability, $menu_slug, $f
  * @return false|string The resulting page's hook_suffix, or false if the user does not have the capability required.
  */
 function add_submenu_page( $parent_slug, $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
-	global $submenu;
-	global $menu;
-	global $_wp_real_parent_file;
-	global $_wp_submenu_nopriv;
-	global $_registered_pages;
-	global $_parent_pages;
+	global $submenu, $menu, $_wp_real_parent_file, $_wp_submenu_nopriv,
+		$_registered_pages, $_parent_pages;
 
 	$menu_slug = plugin_basename( $menu_slug );
 	$parent_slug = plugin_basename( $parent_slug);
@@ -1415,6 +1427,8 @@ function add_comments_page( $page_title, $menu_title, $capability, $menu_slug, $
  *
  * @since 3.1.0
  *
+ * @global array $menu
+ *
  * @param string $menu_slug The slug of the menu
  * @return array|bool The removed menu on success, False if not found
  */
@@ -1436,6 +1450,8 @@ function remove_menu_page( $menu_slug ) {
  *
  * @since 3.1.0
  *
+ * @global array $submenu
+ *
  * @param string $menu_slug The slug for the parent menu
  * @param string $submenu_slug The slug of the submenu
  * @return array|bool The removed submenu on success, False if not found
@@ -1463,6 +1479,8 @@ function remove_submenu_page( $menu_slug, $submenu_slug ) {
  *
  * @since 3.0.0
  *
+ * @global array $_parent_pages
+ *
  * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
  * @param bool $echo Whether or not to echo the url - default is true
  * @return string the url
@@ -1492,17 +1510,21 @@ function menu_page_url($menu_slug, $echo = true) {
 //
 // Pluggable Menu Support -- Private
 //
-
+/**
+ *
+ * @global string $parent_file
+ * @global array $menu
+ * @global array $submenu
+ * @global string $pagenow
+ * @global string $typenow
+ * @global string $plugin_page
+ * @global string $_wp_real_parent_file
+ * @global array $_wp_menu_nopriv
+ * @global array $_wp_submenu_nopriv
+ */
 function get_admin_page_parent( $parent = '' ) {
-	global $parent_file;
-	global $menu;
-	global $submenu;
-	global $pagenow;
-	global $typenow;
-	global $plugin_page;
-	global $_wp_real_parent_file;
-	global $_wp_menu_nopriv;
-	global $_wp_submenu_nopriv;
+	global $parent_file, $menu, $submenu, $pagenow, $typenow,
+		$plugin_page, $_wp_real_parent_file, $_wp_menu_nopriv, $_wp_submenu_nopriv;
 
 	if ( !empty ( $parent ) && 'admin.php' != $parent ) {
 		if ( isset( $_wp_real_parent_file[$parent] ) )
@@ -1556,13 +1578,17 @@ function get_admin_page_parent( $parent = '' ) {
 	return '';
 }
 
+/**
+ *
+ * @global string $title
+ * @global array $menu
+ * @global array $submenu
+ * @global string $pagenow
+ * @global string $plugin_page
+ * @global string $typenow
+ */
 function get_admin_page_title() {
-	global $title;
-	global $menu;
-	global $submenu;
-	global $pagenow;
-	global $plugin_page;
-	global $typenow;
+	global $title, $menu, $submenu, $pagenow, $plugin_page, $typenow;
 
 	if ( ! empty ( $title ) )
 		return $title;
@@ -1640,6 +1666,12 @@ function get_plugin_page_hook( $plugin_page, $parent_page ) {
 		return null;
 }
 
+/**
+ *
+ * @global array $admin_page_hooks
+ * @param string $plugin_page
+ * @param string $parent_page
+ */
 function get_plugin_page_hookname( $plugin_page, $parent_page ) {
 	global $admin_page_hooks;
 
@@ -1661,14 +1693,19 @@ function get_plugin_page_hookname( $plugin_page, $parent_page ) {
 	return $page_type . '_page_' . $plugin_name;
 }
 
+/**
+ *
+ * @global string $pagenow
+ * @global array $menu
+ * @global array $submenu
+ * @global array $_wp_menu_nopriv
+ * @global array $_wp_submenu_nopriv
+ * @global string $plugin_page
+ * @global array $_registered_pages
+ */
 function user_can_access_admin_page() {
-	global $pagenow;
-	global $menu;
-	global $submenu;
-	global $_wp_menu_nopriv;
-	global $_wp_submenu_nopriv;
-	global $plugin_page;
-	global $_registered_pages;
+	global $pagenow, $menu, $submenu, $_wp_menu_nopriv, $_wp_submenu_nopriv,
+		$plugin_page, $_registered_pages;
 
 	$parent = get_admin_page_parent();
 
@@ -1741,6 +1778,8 @@ function user_can_access_admin_page() {
  *
  * @since 2.7.0
  *
+ * @global array $new_whitelist_options
+ *
  * @param string $option_group A settings group name. Should correspond to a whitelisted option key name.
  * 	Default whitelisted option key names include "general," "discussion," and "reading," among others.
  * @param string $option_name The name of an option to sanitize and save.
@@ -1769,6 +1808,8 @@ function register_setting( $option_group, $option_name, $sanitize_callback = ''
  *
  * @since 2.7.0
  *
+ * @global array $new_whitelist_options
+ *
  * @param string   $option_group
  * @param string   $option_name
  * @param callable $sanitize_callback
@@ -1798,6 +1839,8 @@ function unregister_setting( $option_group, $option_name, $sanitize_callback = '
  *
  * @since 2.7.0
  *
+ * @global array $new_whitelist_options
+ *
  * @param array $options
  * @return array
  */
@@ -1816,6 +1859,8 @@ add_filter( 'whitelist_options', 'option_update_filter' );
  *
  * @since 2.7.0
  *
+ * @global array $whitelist_options
+ *
  * @param array        $new_options
  * @param string|array $options
  * @return array
@@ -1847,6 +1892,8 @@ function add_option_whitelist( $new_options, $options = '' ) {
  *
  * @since 2.7.0
  *
+ * @global array $whitelist_options
+ *
  * @param array        $del_options
  * @param string|array $options
  * @return array
diff --git a/src/wp-admin/includes/post.php b/src/wp-admin/includes/post.php
index 9356ace1aa..5ef3ce88e8 100644
--- a/src/wp-admin/includes/post.php
+++ b/src/wp-admin/includes/post.php
@@ -173,6 +173,8 @@ function _wp_translate_postdata( $update = false, $post_data = null ) {
  *
  * @since 1.5.0
  *
+ * @global wpdb $wpdb
+ *
  * @param array $post_data Optional.
  * @return int Post ID.
  */
@@ -401,6 +403,8 @@ function edit_post( $post_data = null ) {
  *
  * @since 2.7.0
  *
+ * @global wpdb $wpdb
+ *
  * @param array $post_data Optional, the array of post data to process if not provided will use $_POST superglobal.
  * @return array
  */
@@ -654,6 +658,8 @@ function get_default_post_to_edit( $post_type = 'post', $create_in_db = false )
  *
  * @since 2.0.0
  *
+ * @global wpdb $wpdb
+ *
  * @param string $title Post title
  * @param string $content Optional post content
  * @param string $date Optional post date
@@ -695,6 +701,8 @@ function post_exists($title, $content = '', $date = '') {
  *
  * @since 2.1.0
  *
+ * @global WP_User $current_user
+ *
  * @return int|WP_Error
  */
 function wp_write_post() {
@@ -834,6 +842,8 @@ function delete_meta( $mid ) {
  *
  * @since 1.2.0
  *
+ * @global wpdb $wpdb
+ *
  * @return mixed
  */
 function get_meta_keys() {
@@ -865,6 +875,8 @@ function get_post_meta_by_id( $mid ) {
  *
  * @since 1.2.0
  *
+ * @global wpdb $wpdb
+ *
  * @param int $postid
  * @return mixed
  */
@@ -1055,6 +1067,8 @@ function wp_edit_posts_query( $q = false ) {
  *
  * @since 2.5.0
  *
+ * @global wpdb $wpdb
+ *
  * @param string $type
  * @return mixed
  */
@@ -1338,6 +1352,9 @@ function get_sample_permalink_html( $id, $new_title = null, $new_slug = null ) {
  *
  * @since 2.9.0
  *
+ * @global int   $content_width
+ * @global array $_wp_additional_image_sizes
+ *
  * @param int $thumbnail_id ID of the attachment used for thumbnail
  * @param mixed $post The post ID or object associated with the thumbnail, defaults to global $post.
  * @return string html
diff --git a/src/wp-admin/includes/schema.php b/src/wp-admin/includes/schema.php
index e0d9cef988..95ee375881 100644
--- a/src/wp-admin/includes/schema.php
+++ b/src/wp-admin/includes/schema.php
@@ -8,14 +8,17 @@
  * @subpackage Administration
  */
 
-// Declare these as global in case schema.php is included from a function.
+/**
+ * Declare these as global in case schema.php is included from a function.
+ *
+ * @global wpdb   $wpdb
+ * @global array  $wp_queries
+ * @global string $charset_collate
+ */
 global $wpdb, $wp_queries, $charset_collate;
 
 /**
  * The database character collate.
- * @var string
- * @global string
- * @name $charset_collate
  */
 $charset_collate = $wpdb->get_charset_collate();
 
@@ -24,6 +27,8 @@ $charset_collate = $wpdb->get_charset_collate();
  *
  * @since 3.3.0
  *
+ * @global wpdb $wpdb
+ *
  * @param string $scope Optional. The tables for which to retrieve SQL. Can be all, global, ms_global, or blog tables. Defaults to all.
  * @param int $blog_id Optional. The blog ID for which to retrieve SQL. Default is the current blog ID.
  * @return string The SQL needed to create the requested tables.
@@ -863,6 +868,11 @@ endif;
  *
  * @since 3.0.0
  *
+ * @global wpdb       $wpdb
+ * @global object     $current_site
+ * @global int        $wp_db_version
+ * @global WP_Rewrite $wp_rewrite
+ *
  * @param int $network_id ID of network to populate.
  * @return bool|WP_Error True on success, or WP_Error on warning (with the install otherwise successful,
  *                       so the error code must be checked) or failure.
diff --git a/src/wp-admin/includes/screen.php b/src/wp-admin/includes/screen.php
index 3572446d89..a4d5ac6155 100644
--- a/src/wp-admin/includes/screen.php
+++ b/src/wp-admin/includes/screen.php
@@ -60,6 +60,8 @@ function get_hidden_columns( $screen ) {
  *
  * @since 2.7.0
  *
+ * @global array $wp_meta_boxes
+ *
  * @param WP_Screen $screen
  */
 function meta_box_prefs( $screen ) {
@@ -162,6 +164,8 @@ function add_screen_option( $option, $args = array() ) {
  *
  * @since 3.1.0
  *
+ * @global WP_Screen $current_screen
+ *
  * @return WP_Screen Current screen object
  */
 function get_current_screen() {
@@ -368,6 +372,8 @@ final class WP_Screen {
 	 * @since 3.3.0
 	 * @access public
 	 *
+	 * @global string $hook_suffix
+	 *
 	 * @param string|WP_Screen $hook_name Optional. The hook name (also known as the hook suffix) used to determine the screen.
 	 * 	Defaults to the current $hook_suffix global.
 	 * @return WP_Screen Screen object.
@@ -529,6 +535,10 @@ final class WP_Screen {
 	 *
 	 * @see set_current_screen()
 	 * @since 3.3.0
+	 *
+	 * @global WP_Screen $current_screen
+	 * @global string    $taxnow
+	 * @global string    $typenow
 	 */
 	public function set_current_screen() {
 		global $current_screen, $taxnow, $typenow;
@@ -787,6 +797,8 @@ final class WP_Screen {
 	 * This will trigger the deprecated filters for backwards compatibility.
 	 *
 	 * @since 3.3.0
+	 *
+	 * @global string $screen_layout_columns
 	 */
 	public function render_screen_meta() {
 
@@ -959,6 +971,12 @@ final class WP_Screen {
 		<?php
 	}
 
+	/**
+	 *
+	 * @global array $wp_meta_boxes
+	 * 
+	 * @return bool
+	 */
 	public function show_screen_options() {
 		global $wp_meta_boxes;
 
@@ -1017,6 +1035,8 @@ final class WP_Screen {
 	 * Render the screen options tab.
 	 *
 	 * @since 3.3.0
+	 *
+	 * @global array $wp_meta_boxes
 	 */
 	public function render_screen_options() {
 		global $wp_meta_boxes;
diff --git a/src/wp-admin/includes/template.php b/src/wp-admin/includes/template.php
index 03ff4e7d9e..03ac33944d 100644
--- a/src/wp-admin/includes/template.php
+++ b/src/wp-admin/includes/template.php
@@ -436,6 +436,8 @@ function get_inline_data($post) {
  *
  * @since 2.7.0
  *
+ * @global WP_List_Table $wp_list_table
+ *
  * @param int $position
  * @param bool $checkbox
  * @param string $mode
@@ -656,6 +658,8 @@ function _list_meta_row( $entry, &$count ) {
  *
  * @since 1.2.0
  *
+ * @global wpdb $wpdb
+ *
  * @param WP_Post $post Optional. The post being edited.
  */
 function meta_form( $post = null ) {
@@ -737,6 +741,9 @@ function meta_form( $post = null ) {
  *
  * @since 0.71
  *
+ * @global WP_Locale $wp_locale
+ * @global object    $comment
+ *
  * @param int|bool $edit      Accepts 1|true for editing the date, 0|false for adding the date.
  * @param int|bool $for_post  Accepts 1|true for applying the date to a post, 0|false for a comment.
  * @param int      $tab_index The tabindex attribute to add. Default 0.
@@ -839,6 +846,8 @@ function page_template_dropdown( $default = '' ) {
  *
  * @since 1.5.0
  *
+ * @global wpdb $wpdb
+ *
  * @param int $default Optional. The default page ID to be pre-selected. Default 0.
  * @param int $parent  Optional. The parent page ID. Default 0.
  * @param int $level   Optional. Page depth level. Default 0.
@@ -934,6 +943,8 @@ function wp_import_upload_form( $action ) {
  *
  * @since 2.5.0
  *
+ * @global array $wp_meta_boxes
+ *
  * @param string           $id            String for use in the 'id' attribute of tags.
  * @param string           $title         Title of the meta box.
  * @param callback         $callback      Function that fills the box with the desired content.
@@ -1022,6 +1033,8 @@ function add_meta_box( $id, $title, $callback, $screen = null, $context = 'advan
  *
  * @since 2.5.0
  *
+ * @global array $wp_meta_boxes
+ *
  * @staticvar bool $already_sorted
  * @param string|WP_Screen $screen Screen identifier
  * @param string $context box context
@@ -1090,6 +1103,8 @@ function do_meta_boxes( $screen, $context, $object ) {
  *
  * @since 2.6.0
  *
+ * @global array $wp_meta_boxes
+ *
  * @param string $id String for use in the 'id' attribute of tags.
  * @param string|object $screen The screen on which to show the box (post, page, link).
  * @param string $context The context within the page where the boxes should show ('normal', 'advanced').
@@ -1576,6 +1591,10 @@ function _admin_search_query() {
  *
  * @since 2.7.0
  *
+ * @global string    $hook_suffix
+ * @global string    $admin_body_class
+ * @global WP_Locale $wp_locale
+ *
  * @param string $title      Optional. Title of the Iframe page. Default empty.
  * @param bool   $deprecated Not used.
  */
@@ -1637,7 +1656,11 @@ if ( is_rtl() )
 /** This filter is documented in wp-admin/admin-header.php */
 $admin_body_classes = apply_filters( 'admin_body_class', '' );
 ?>
-<body<?php if ( isset($GLOBALS['body_id']) ) echo ' id="' . $GLOBALS['body_id'] . '"'; ?> class="wp-admin wp-core-ui no-js iframe <?php echo $admin_body_classes . ' ' . $admin_body_class; ?>">
+<body<?php
+/**
+ * @global string $body_id
+ */
+if ( isset($GLOBALS['body_id']) ) echo ' id="' . $GLOBALS['body_id'] . '"'; ?> class="wp-admin wp-core-ui no-js iframe <?php echo $admin_body_classes . ' ' . $admin_body_class; ?>">
 <script type="text/javascript">
 (function(){
 var c = document.body.className;
@@ -1921,6 +1944,10 @@ function get_submit_button( $text = '', $type = 'primary large', $name = 'submit
 	return $button;
 }
 
+/**
+ *
+ * @global bool $is_IE
+ */
 function _wp_admin_html_begin() {
 	global $is_IE;
 
@@ -2107,6 +2134,11 @@ final class WP_Internal_Pointers {
 		) );
 	}
 
+	/**
+	 * @static
+	 *
+	 * @global bool $_wp_editor_expand
+	 */
 	public static function pointer_wp410_dfw() {
 		// Don't show when editor-scrolling is not used.
 		if ( empty( $GLOBALS['_wp_editor_expand'] ) ) {
diff --git a/src/wp-admin/includes/theme-install.php b/src/wp-admin/includes/theme-install.php
index ded1324dc7..c7d9160ea2 100644
--- a/src/wp-admin/includes/theme-install.php
+++ b/src/wp-admin/includes/theme-install.php
@@ -150,6 +150,8 @@ function install_themes_upload() {
  * Prints a theme on the Install Themes pages.
  *
  * @deprecated 3.4.0
+ *
+ * @global WP_Theme_Install_List_Table $wp_list_table
  */
 function display_theme( $theme ) {
 	_deprecated_function( __FUNCTION__, '3.4' );
@@ -165,6 +167,8 @@ function display_theme( $theme ) {
  * Display theme content based on theme list.
  *
  * @since 2.8.0
+ *
+ * @global WP_Theme_Install_List_Table $wp_list_table
  */
 function display_themes() {
 	global $wp_list_table;
@@ -185,6 +189,8 @@ function display_themes() {
  * Display theme information in dialog box form.
  *
  * @since 2.8.0
+ *
+ * @global WP_Theme_Install_List_Table $wp_list_table
  */
 function install_theme_information() {
 	global $wp_list_table;
diff --git a/src/wp-admin/includes/theme.php b/src/wp-admin/includes/theme.php
index 4a9cfbc203..18d8687819 100644
--- a/src/wp-admin/includes/theme.php
+++ b/src/wp-admin/includes/theme.php
@@ -11,6 +11,8 @@
  *
  * @since 2.8.0
  *
+ * @global WP_Filesystem_Base $wp_filesystem Subclass
+ *
  * @param string $stylesheet Stylesheet of the theme to delete
  * @param string $redirect Redirect to page when complete.
  * @return mixed
diff --git a/src/wp-admin/includes/translation-install.php b/src/wp-admin/includes/translation-install.php
index 25358f448f..8e1b827c47 100644
--- a/src/wp-admin/includes/translation-install.php
+++ b/src/wp-admin/includes/translation-install.php
@@ -124,6 +124,8 @@ function wp_get_available_translations() {
  *
  * @since 4.0.0
  *
+ * @global string $wp_local_package
+ *
  * @param array $languages Array of available languages (populated via the Translation API).
  */
 function wp_install_language_form( $languages ) {
diff --git a/src/wp-admin/includes/update-core.php b/src/wp-admin/includes/update-core.php
index a15cc887e1..1dc1a4ca5e 100644
--- a/src/wp-admin/includes/update-core.php
+++ b/src/wp-admin/includes/update-core.php
@@ -768,6 +768,14 @@ $_new_bundled_files = array(
  *
  * @since 2.7.0
  *
+ * @global WP_Filesystem_Base $wp_filesystem
+ * @global array              $_old_files
+ * @global array              $_new_bundled_files
+ * @global wpdb               $wpdb
+ * @global string             $wp_version
+ * @global string             $required_php_version
+ * @global string             $required_mysql_version
+ *
  * @param string $from New release unzipped path.
  * @param string $to Path to old WordPress installation.
  * @return WP_Error|null WP_Error on failure, null on success.
@@ -810,8 +818,15 @@ function update_core($from, $to) {
 		return new WP_Error( 'insane_distro', __('The update could not be unpacked') );
 	}
 
-	// Import $wp_version, $required_php_version, and $required_mysql_version from the new version
-	// $wp_filesystem->wp_content_dir() returned unslashed pre-2.8
+
+	/**
+	 * Import $wp_version, $required_php_version, and $required_mysql_version from the new version
+	 * $wp_filesystem->wp_content_dir() returned unslashed pre-2.8
+	 *
+	 * @global string $wp_version
+	 * @global string $required_php_version
+	 * @global string $required_mysql_version
+	 */
 	global $wp_version, $required_php_version, $required_mysql_version;
 
 	$versions_file = trailingslashit( $wp_filesystem->wp_content_dir() ) . 'upgrade/version-current.php';
@@ -1101,6 +1116,8 @@ function update_core($from, $to) {
  * @since 3.7.0 Updated not to use a regular expression for the skip list
  * @see copy_dir()
  *
+ * @global WP_Filesystem_Base $wp_filesystem
+ *
  * @param string $from source directory
  * @param string $to destination directory
  * @param array $skip_list a list of files/folders to skip copying
@@ -1156,6 +1173,9 @@ function _copy_dir($from, $to, $skip_list = array() ) {
  *
  * @since 3.3.0
  *
+ * @global string $wp_version
+ * @global string $pagenow
+ * @global string $action
  */
 function _redirect_to_about_wordpress( $new_version ) {
 	global $wp_version, $pagenow, $action;
@@ -1196,6 +1216,9 @@ add_action( '_core_updated_successfully', '_redirect_to_about_wordpress' );
  * Cleans up Genericons example files.
  *
  * @since 4.2.2
+ *
+ * @global array              $wp_theme_directories
+ * @global WP_Filesystem_Base $wp_filesystem
  */
 function _upgrade_422_remove_genericons() {
 	global $wp_theme_directories, $wp_filesystem;
diff --git a/src/wp-admin/includes/update.php b/src/wp-admin/includes/update.php
index ba03453d0c..3dfea9fcbc 100644
--- a/src/wp-admin/includes/update.php
+++ b/src/wp-admin/includes/update.php
@@ -190,6 +190,11 @@ function core_update_footer( $msg = '' ) {
 }
 add_filter( 'update_footer', 'core_update_footer' );
 
+/**
+ *
+ * @global string $pagenow
+ * @return false|void
+ */
 function update_nag() {
 	if ( is_multisite() && !current_user_can('update_core') )
 		return false;
@@ -400,6 +405,11 @@ function wp_theme_update_row( $theme_key, $theme ) {
 	echo '</div></td></tr>';
 }
 
+/**
+ *
+ * @global int $upgrading
+ * @return false|void
+ */
 function maintenance_nag() {
 	include( ABSPATH . WPINC . '/version.php' ); // include an unmodified $wp_version
 	global $upgrading;
diff --git a/src/wp-admin/includes/upgrade.php b/src/wp-admin/includes/upgrade.php
index dde618ab02..33aa001e2f 100644
--- a/src/wp-admin/includes/upgrade.php
+++ b/src/wp-admin/includes/upgrade.php
@@ -118,6 +118,10 @@ if ( !function_exists('wp_install_defaults') ) :
  *
  * @since 2.1.0
  *
+ * @global wpdb       $wpdb
+ * @global WP_Rewrite $wp_rewrite
+ * @global string     $table_prefix
+ *
  * @param int $user_id User ID.
  */
 function wp_install_defaults( $user_id ) {
@@ -385,6 +389,10 @@ if ( !function_exists('wp_upgrade') ) :
  *
  * @since 2.1.0
  *
+ * @global int  $wp_current_db_version
+ * @global int  $wp_db_version
+ * @global wpdb $wpdb
+ *
  * @return null If no update is necessary or site isn't completely installed, null.
  */
 function wp_upgrade() {
@@ -435,6 +443,9 @@ endif;
  *
  * @since 1.0.1
  *
+ * @global int $wp_current_db_version
+ * @global int $wp_db_version
+ *
  * @return null If no update is necessary, null.
  */
 function upgrade_all() {
@@ -545,6 +556,8 @@ function upgrade_all() {
  * Execute changes made in WordPress 1.0.
  *
  * @since 1.0.0
+ *
+ * @global wpdb $wpdb
  */
 function upgrade_100() {
 	global $wpdb;
@@ -601,6 +614,8 @@ function upgrade_100() {
  * Execute changes made in WordPress 1.0.1.
  *
  * @since 1.0.1
+ *
+ * @global wpdb $wpdb
  */
 function upgrade_101() {
 	global $wpdb;
@@ -619,6 +634,8 @@ function upgrade_101() {
  * Execute changes made in WordPress 1.2.
  *
  * @since 1.2.0
+ *
+ * @global wpdb $wpdb
  */
 function upgrade_110() {
 	global $wpdb;
@@ -679,6 +696,8 @@ function upgrade_110() {
  * Execute changes made in WordPress 1.5.
  *
  * @since 1.5.0
+ *
+ * @global wpdb $wpdb
  */
 function upgrade_130() {
 	global $wpdb;
@@ -763,6 +782,9 @@ function upgrade_130() {
  * Execute changes made in WordPress 2.0.
  *
  * @since 2.0.0
+ *
+ * @global wpdb $wpdb
+ * @global int  $wp_current_db_version
  */
 function upgrade_160() {
 	global $wpdb, $wp_current_db_version;
@@ -846,6 +868,9 @@ function upgrade_160() {
  * Execute changes made in WordPress 2.1.
  *
  * @since 2.1.0
+ *
+ * @global wpdb $wpdb
+ * @global int  $wp_current_db_version
  */
 function upgrade_210() {
 	global $wpdb, $wp_current_db_version;
@@ -890,6 +915,9 @@ function upgrade_210() {
  * Execute changes made in WordPress 2.3.
  *
  * @since 2.3.0
+ *
+ * @global wpdb $wpdb
+ * @global int  $wp_current_db_version
  */
 function upgrade_230() {
 	global $wp_current_db_version, $wpdb;
@@ -1066,6 +1094,8 @@ function upgrade_230() {
  * Remove old options from the database.
  *
  * @since 2.3.0
+ *
+ * @global wpdb $wpdb
  */
 function upgrade_230_options_table() {
 	global $wpdb;
@@ -1080,6 +1110,8 @@ function upgrade_230_options_table() {
  * Remove old categories, link2cat, and post2cat database tables.
  *
  * @since 2.3.0
+ *
+ * @global wpdb $wpdb
  */
 function upgrade_230_old_tables() {
 	global $wpdb;
@@ -1092,6 +1124,8 @@ function upgrade_230_old_tables() {
  * Upgrade old slugs made in version 2.2.
  *
  * @since 2.2.0
+ *
+ * @global wpdb $wpdb
  */
 function upgrade_old_slugs() {
 	// Upgrade people who were using the Redirect Old Slugs plugin.
@@ -1103,6 +1137,8 @@ function upgrade_old_slugs() {
  * Execute changes made in WordPress 2.5.0.
  *
  * @since 2.5.0
+ *
+ * @global int $wp_current_db_version
  */
 function upgrade_250() {
 	global $wp_current_db_version;
@@ -1117,6 +1153,8 @@ function upgrade_250() {
  * Execute changes made in WordPress 2.5.2.
  *
  * @since 2.5.2
+ *
+ * @global wpdb $wpdb
  */
 function upgrade_252() {
 	global $wpdb;
@@ -1128,6 +1166,8 @@ function upgrade_252() {
  * Execute changes made in WordPress 2.6.
  *
  * @since 2.6.0
+ *
+ * @global int $wp_current_db_version
  */
 function upgrade_260() {
 	global $wp_current_db_version;
@@ -1140,6 +1180,9 @@ function upgrade_260() {
  * Execute changes made in WordPress 2.7.
  *
  * @since 2.7.0
+ *
+ * @global wpdb $wpdb
+ * @global int  $wp_current_db_version
  */
 function upgrade_270() {
 	global $wpdb, $wp_current_db_version;
@@ -1156,6 +1199,9 @@ function upgrade_270() {
  * Execute changes made in WordPress 2.8.
  *
  * @since 2.8.0
+ *
+ * @global int  $wp_current_db_version
+ * @global wpdb $wpdb
  */
 function upgrade_280() {
 	global $wp_current_db_version, $wpdb;
@@ -1183,6 +1229,8 @@ function upgrade_280() {
  * Execute changes made in WordPress 2.9.
  *
  * @since 2.9.0
+ *
+ * @global int $wp_current_db_version
  */
 function upgrade_290() {
 	global $wp_current_db_version;
@@ -1200,6 +1248,9 @@ function upgrade_290() {
  * Execute changes made in WordPress 3.0.
  *
  * @since 3.0.0
+ *
+ * @global int  $wp_current_db_version
+ * @global wpdb $wpdb
  */
 function upgrade_300() {
 	global $wp_current_db_version, $wpdb;
@@ -1242,6 +1293,11 @@ function upgrade_300() {
  * Execute changes made in WordPress 3.3.
  *
  * @since 3.3.0
+ *
+ * @global int   $wp_current_db_version
+ * @global wpdb  $wpdb
+ * @global array $wp_registered_widgets
+ * @global array $sidebars_widgets
  */
 function upgrade_330() {
 	global $wp_current_db_version, $wpdb, $wp_registered_widgets, $sidebars_widgets;
@@ -1311,6 +1367,9 @@ function upgrade_330() {
  * Execute changes made in WordPress 3.4.
  *
  * @since 3.4.0
+ *
+ * @global int   $wp_current_db_version
+ * @global wpdb  $wpdb
  */
 function upgrade_340() {
 	global $wp_current_db_version, $wpdb;
@@ -1344,6 +1403,9 @@ function upgrade_340() {
  * Execute changes made in WordPress 3.5.
  *
  * @since 3.5.0
+ *
+ * @global int   $wp_current_db_version
+ * @global wpdb  $wpdb
  */
 function upgrade_350() {
 	global $wp_current_db_version, $wpdb;
@@ -1371,6 +1433,8 @@ function upgrade_350() {
  * Execute changes made in WordPress 3.7.
  *
  * @since 3.7.0
+ *
+ * @global int $wp_current_db_version
  */
 function upgrade_370() {
 	global $wp_current_db_version;
@@ -1383,6 +1447,8 @@ function upgrade_370() {
  *
  * @since 3.7.2
  * @since 3.8.0
+ *
+ * @global int $wp_current_db_version
  */
 function upgrade_372() {
 	global $wp_current_db_version;
@@ -1394,6 +1460,8 @@ function upgrade_372() {
  * Execute changes made in WordPress 3.8.0.
  *
  * @since 3.8.0
+ *
+ * @global int $wp_current_db_version
  */
 function upgrade_380() {
 	global $wp_current_db_version;
@@ -1406,6 +1474,8 @@ function upgrade_380() {
  * Execute changes made in WordPress 4.0.0.
  *
  * @since 4.0.0
+ *
+ * @global int $wp_current_db_version
  */
 function upgrade_400() {
 	global $wp_current_db_version;
@@ -1424,6 +1494,9 @@ function upgrade_400() {
  * Execute changes made in WordPress 4.2.0.
  *
  * @since 4.2.0
+ *
+ * @global int   $wp_current_db_version
+ * @global wpdb  $wpdb
  */
 function upgrade_420() {
 	global $wp_current_db_version, $wpdb;
@@ -1445,6 +1518,9 @@ function upgrade_420() {
  * Execute changes made in WordPress 4.3.0.
  *
  * @since 4.3.0
+ *
+ * @global int   $wp_current_db_version
+ * @global wpdb  $wpdb
  */
 function upgrade_430() {
 	global $wp_current_db_version, $wpdb;
@@ -1493,6 +1569,9 @@ function upgrade_430() {
  * Executes network-level upgrade routines.
  *
  * @since 3.0.0
+ *
+ * @global int   $wp_current_db_version
+ * @global wpdb  $wpdb
  */
 function upgrade_network() {
 	global $wp_current_db_version, $wpdb;
@@ -1634,6 +1713,8 @@ function upgrade_network() {
  *
  * @since 1.0.0
  *
+ * @global wpdb  $wpdb
+ *
  * @param string $table_name Database table name to create.
  * @param string $create_ddl SQL statement to create table.
  * @return bool If table already exists or was created by function.
@@ -1662,6 +1743,8 @@ function maybe_create_table($table_name, $create_ddl) {
  *
  * @since 1.0.1
  *
+ * @global wpdb  $wpdb
+ *
  * @param string $table Database table name.
  * @param string $index Index name to drop.
  * @return bool True, when finished.
@@ -1683,6 +1766,8 @@ function drop_index($table, $index) {
  *
  * @since 1.0.1
  *
+ * @global wpdb  $wpdb
+ *
  * @param string $table Database table name.
  * @param string $index Database table index column.
  * @return bool True, when done with execution.
@@ -1699,6 +1784,8 @@ function add_clean_index($table, $index) {
  *
  * @since 1.3.0
  *
+ * @global wpdb  $wpdb
+ *
  * @param string $table_name  The table name to modify.
  * @param string $column_name The column name to add to the table.
  * @param string $create_ddl  The SQL statement used to add the column.
@@ -1729,6 +1816,8 @@ function maybe_add_column($table_name, $column_name, $create_ddl) {
  *
  * @since 4.2.0
  *
+ * @global wpdb  $wpdb
+ *
  * @param string $table The table to convert.
  * @return bool true if the table was converted, false if it wasn't.
  */
@@ -1770,6 +1859,8 @@ function maybe_convert_table_to_utf8mb4( $table ) {
  *
  * @since 1.2.0
  *
+ * @global wpdb  $wpdb
+ *
  * @return stdClass List of options.
  */
 function get_alloptions_110() {
@@ -1792,6 +1883,8 @@ function get_alloptions_110() {
  * @since 1.5.1
  * @access private
  *
+ * @global wpdb  $wpdb
+ *
  * @param string $setting Option name.
  * @return mixed
  */
@@ -1851,6 +1944,8 @@ function deslash($content) {
  *
  * @since 1.5.0
  *
+ * @global wpdb  $wpdb
+ *
  * @param string|array $queries Optional. The query to run. Can be multiple queries
  *                              in an array, or a string of queries separated by
  *                              semicolons. Default empty.
@@ -2375,6 +2470,8 @@ function translate_level_to_role($level) {
  * Checks the version of the installed MySQL binary.
  *
  * @since 2.1.0
+ *
+ * @global wpdb  $wpdb
  */
 function wp_check_mysql_version() {
 	global $wpdb;
@@ -2404,6 +2501,9 @@ function maybe_disable_automattic_widgets() {
  * Disables the Link Manager on upgrade if, at the time of upgrade, no links exist in the DB.
  *
  * @since 3.5.0
+ *
+ * @global int  $wp_current_db_version
+ * @global wpdb $wpdb
  */
 function maybe_disable_link_manager() {
 	global $wp_current_db_version, $wpdb;
@@ -2416,6 +2516,9 @@ function maybe_disable_link_manager() {
  * Runs before the schema is upgraded.
  *
  * @since 2.9.0
+ *
+ * @global int  $wp_current_db_version
+ * @global wpdb $wpdb
  */
 function pre_schema_upgrade() {
 	global $wp_current_db_version, $wpdb;
@@ -2472,6 +2575,8 @@ function pre_schema_upgrade() {
  *
  * @since 3.0.0
  *
+ * @global wpdb   $wpdb
+ * @global string $charset_collate
  */
 if ( !function_exists( 'install_global_terms' ) ) :
 function install_global_terms() {
diff --git a/src/wp-admin/menu.php b/src/wp-admin/menu.php
index f4fee7281f..2cb90bd09a 100644
--- a/src/wp-admin/menu.php
+++ b/src/wp-admin/menu.php
@@ -18,8 +18,6 @@
  *     5: Icon for top level menu
  *
  * @global array $menu
- * @name $menu
- * @var array
  */
 
 $menu[2] = array( __('Dashboard'), 'read', 'index.php', '', 'menu-top menu-top-first menu-icon-dashboard', 'menu-dashboard', 'dashicons-dashboard' );