diff --git a/src/wp-includes/category-template.php b/src/wp-includes/category-template.php
index 11753978f4..25c7dd5c88 100644
--- a/src/wp-includes/category-template.php
+++ b/src/wp-includes/category-template.php
@@ -153,6 +153,8 @@ function get_the_category_by_ID( $cat_ID ) {
  *
  * @since 1.5.1
  *
+ * @global WP_Rewrite $wp_rewrite
+ *
  * @param string $separator Optional, default is empty string. Separator for between the categories.
  * @param string $parents Optional. How to display the parents.
  * @param int $post_id Optional. Post ID to retrieve categories.
diff --git a/src/wp-includes/class-http.php b/src/wp-includes/class-http.php
index 6ba1996b47..622d2c105e 100644
--- a/src/wp-includes/class-http.php
+++ b/src/wp-includes/class-http.php
@@ -36,6 +36,8 @@ class WP_Http {
 	 * @access public
 	 * @since 2.7.0
 	 *
+	 * @global string $wp_version
+	 *
 	 * @param string       $url  The request URL.
 	 * @param string|array $args {
 	 *     Optional. Array or string of HTTP request arguments.
diff --git a/src/wp-includes/class-wp-customize-control.php b/src/wp-includes/class-wp-customize-control.php
index e8004dd4e4..5c9c575647 100644
--- a/src/wp-includes/class-wp-customize-control.php
+++ b/src/wp-includes/class-wp-customize-control.php
@@ -1048,6 +1048,10 @@ class WP_Customize_Header_Image_Control extends WP_Customize_Image_Control {
 		parent::enqueue();
 	}
 
+	/**
+	 *
+	 * @global Custom_Image_Header $custom_image_header
+	 */
 	public function prepare_control() {
 		global $custom_image_header;
 		if ( empty( $custom_image_header ) ) {
@@ -1064,14 +1068,14 @@ class WP_Customize_Header_Image_Control extends WP_Customize_Image_Control {
 		?>
 		<script type="text/template" id="tmpl-header-choice">
 			<# if (data.random) { #>
-					<button type="button" class="button display-options random">
-						<span class="dashicons dashicons-randomize dice"></span>
-						<# if ( data.type === 'uploaded' ) { #>
-							<?php _e( 'Randomize uploaded headers' ); ?>
-						<# } else if ( data.type === 'default' ) { #>
-							<?php _e( 'Randomize suggested headers' ); ?>
-						<# } #>
-					</button>
+			<button type="button" class="button display-options random">
+				<span class="dashicons dashicons-randomize dice"></span>
+				<# if ( data.type === 'uploaded' ) { #>
+					<?php _e( 'Randomize uploaded headers' ); ?>
+				<# } else if ( data.type === 'default' ) { #>
+					<?php _e( 'Randomize suggested headers' ); ?>
+				<# } #>
+			</button>
 
 			<# } else { #>
 
@@ -1350,6 +1354,10 @@ class WP_Widget_Form_Customize_Control extends WP_Customize_Control {
 		}
 	}
 
+	/**
+	 *
+	 * @global array $wp_registered_widgets
+	 */
 	public function render_content() {
 		global $wp_registered_widgets;
 		require_once ABSPATH . '/wp-admin/includes/widgets.php';
diff --git a/src/wp-includes/class-wp-customize-setting.php b/src/wp-includes/class-wp-customize-setting.php
index ad555ba132..8022fe8ecb 100644
--- a/src/wp-includes/class-wp-customize-setting.php
+++ b/src/wp-includes/class-wp-customize-setting.php
@@ -592,6 +592,8 @@ final class WP_Customize_Header_Image_Setting extends WP_Customize_Setting {
 	/**
 	 * @since 3.4.0
 	 *
+	 * @global Custom_Image_Header $custom_image_header
+	 *
 	 * @param $value
 	 */
 	public function update( $value ) {
diff --git a/src/wp-includes/class-wp-customize-widgets.php b/src/wp-includes/class-wp-customize-widgets.php
index a9f67add0c..2bd073e6a0 100644
--- a/src/wp-includes/class-wp-customize-widgets.php
+++ b/src/wp-includes/class-wp-customize-widgets.php
@@ -203,6 +203,9 @@ final class WP_Customize_Widgets {
 	 *
 	 * @since 3.9.0
 	 * @access public
+	 *
+	 * @global array $sidebars_widgets
+	 * @global array $_wp_sidebars_widgets
 	 */
 	public function override_sidebars_widgets_for_theme_switch() {
 		global $sidebars_widgets;
@@ -218,7 +221,8 @@ final class WP_Customize_Widgets {
 		$sidebars_widgets = $this->old_sidebars_widgets;
 		$sidebars_widgets = retrieve_widgets( 'customize' );
 		add_filter( 'option_sidebars_widgets', array( $this, 'filter_option_sidebars_widgets_for_theme_switch' ), 1 );
-		unset( $GLOBALS['_wp_sidebars_widgets'] ); // reset global cache var used by wp_get_sidebars_widgets()
+		// reset global cache var used by wp_get_sidebars_widgets()
+		unset( $GLOBALS['_wp_sidebars_widgets'] );
 	}
 
 	/**
@@ -252,6 +256,8 @@ final class WP_Customize_Widgets {
 	 * @since 3.9.0
 	 * @access public
 	 *
+	 * @global array $sidebars_widgets
+	 *
 	 * @param array $sidebars_widgets
 	 * @return array
 	 */
@@ -303,13 +309,17 @@ final class WP_Customize_Widgets {
 	 *
 	 * @since 3.9.0
 	 * @access public
+	 *
+	 * @global array $wp_registered_widgets
+	 * @global array $wp_registered_widget_controls
+	 * @global array $wp_registered_sidebars
 	 */
 	public function customize_register() {
 		global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_sidebars;
 
 		$sidebars_widgets = array_merge(
 			array( 'wp_inactive_widgets' => array() ),
-			array_fill_keys( array_keys( $GLOBALS['wp_registered_sidebars'] ), array() ),
+			array_fill_keys( array_keys( $wp_registered_sidebars ), array() ),
 			wp_get_sidebars_widgets()
 		);
 
@@ -353,7 +363,7 @@ final class WP_Customize_Widgets {
 				$sidebar_widget_ids = array();
 			}
 
-			$is_registered_sidebar = isset( $GLOBALS['wp_registered_sidebars'][$sidebar_id] );
+			$is_registered_sidebar = isset( $wp_registered_sidebars[ $sidebar_id ] );
 			$is_inactive_widgets   = ( 'wp_inactive_widgets' === $sidebar_id );
 			$is_active_sidebar     = ( $is_registered_sidebar && ! $is_inactive_widgets );
 
@@ -374,8 +384,8 @@ final class WP_Customize_Widgets {
 				if ( $is_active_sidebar ) {
 
 					$section_args = array(
-						'title' => $GLOBALS['wp_registered_sidebars'][ $sidebar_id ]['name'],
-						'description' => $GLOBALS['wp_registered_sidebars'][ $sidebar_id ]['description'],
+						'title' => $wp_registered_sidebars[ $sidebar_id ]['name'],
+						'description' => $wp_registered_sidebars[ $sidebar_id ]['description'],
 						'priority' => array_search( $sidebar_id, array_keys( $wp_registered_sidebars ) ),
 						'panel' => 'widgets',
 						'sidebar_id' => $sidebar_id,
@@ -410,13 +420,13 @@ final class WP_Customize_Widgets {
 			foreach ( $sidebar_widget_ids as $i => $widget_id ) {
 
 				// Skip widgets that may have gone away due to a plugin being deactivated.
-				if ( ! $is_active_sidebar || ! isset( $GLOBALS['wp_registered_widgets'][$widget_id] ) ) {
+				if ( ! $is_active_sidebar || ! isset( $wp_registered_widgets[$widget_id] ) ) {
 					continue;
 				}
 
-				$registered_widget = $GLOBALS['wp_registered_widgets'][$widget_id];
+				$registered_widget = $wp_registered_widgets[$widget_id];
 				$setting_id        = $this->get_setting_id( $widget_id );
-				$id_base           = $GLOBALS['wp_registered_widget_controls'][$widget_id]['id_base'];
+				$id_base           = $wp_registered_widget_controls[$widget_id]['id_base'];
 
 				$control = new WP_Widget_Form_Customize_Control( $this->manager, $setting_id, array(
 					'label'          => $registered_widget['name'],
@@ -474,6 +484,8 @@ final class WP_Customize_Widgets {
 	 * @since 3.9.0
 	 * @access public
 	 *
+	 * @global $wp_registered_widget_controls
+	 *
 	 * @param string $widget_id Widget ID.
 	 * @return bool Whether or not the widget is a "wide" widget.
 	 */
@@ -577,8 +589,14 @@ final class WP_Customize_Widgets {
 	 *
 	 * @since 3.9.0
 	 * @access public
+	 *
+	 * @global WP_Scripts $wp_scripts
+	 * @global array $wp_registered_sidebars
+	 * @global array $wp_registered_widgets
 	 */
 	public function enqueue_scripts() {
+		global $wp_scripts, $wp_registered_sidebars, $wp_registered_widgets;
+
 		wp_enqueue_style( 'customize-widgets' );
 		wp_enqueue_script( 'customize-widgets' );
 
@@ -622,12 +640,10 @@ final class WP_Customize_Widgets {
 			</div>'
 		);
 
-		global $wp_scripts;
-
 		$settings = array(
 			'nonce'                => wp_create_nonce( 'update-widget' ),
-			'registeredSidebars'   => array_values( $GLOBALS['wp_registered_sidebars'] ),
-			'registeredWidgets'    => $GLOBALS['wp_registered_widgets'],
+			'registeredSidebars'   => array_values( $wp_registered_sidebars ),
+			'registeredWidgets'    => $wp_registered_widgets,
 			'availableWidgets'     => $available_widgets, // @todo Merge this with registered_widgets
 			'l10n' => array(
 				'saveBtnLabel'     => __( 'Apply' ),
@@ -763,6 +779,10 @@ final class WP_Customize_Widgets {
 	 * @since 3.9.0
 	 * @access public
 	 *
+	 * @global array $wp_registered_widgets
+	 * @global array $wp_registered_widget_controls
+	 * @staticvar array $available_widgets
+	 *
 	 * @see wp_list_widgets()
 	 *
 	 * @return array List of available widgets.
@@ -967,15 +987,18 @@ final class WP_Customize_Widgets {
 	 *
 	 * @since 3.9.0
 	 * @access public
+     *
+	 * @global array $wp_registered_sidebars
+	 * @global array $wp_registered_widgets
 	 */
 	public function export_preview_data() {
-
+		global $wp_registered_sidebars, $wp_registered_widgets;
 		// Prepare Customizer settings to pass to JavaScript.
 		$settings = array(
 			'renderedSidebars'   => array_fill_keys( array_unique( $this->rendered_sidebars ), true ),
 			'renderedWidgets'    => array_fill_keys( array_keys( $this->rendered_widgets ), true ),
-			'registeredSidebars' => array_values( $GLOBALS['wp_registered_sidebars'] ),
-			'registeredWidgets'  => $GLOBALS['wp_registered_widgets'],
+			'registeredSidebars' => array_values( $wp_registered_sidebars ),
+			'registeredWidgets'  => $wp_registered_widgets,
 			'l10n'               => array(
 				'widgetTooltip' => __( 'Shift-click to edit this widget.' ),
 			),
@@ -1040,6 +1063,8 @@ final class WP_Customize_Widgets {
 	 * @since 3.9.0
 	 * @access public
 	 *
+	 * @global array $wp_registered_sidebars
+	 *
 	 * @param bool   $is_active  Whether the sidebar is active.
 	 * @param string $sidebar_id Sidebar ID.
 	 * @return bool
@@ -1066,6 +1091,8 @@ final class WP_Customize_Widgets {
 	 * @since 3.9.0
 	 * @access public
 	 *
+	 * @global array $wp_registered_sidebars
+	 *
 	 * @param bool   $has_widgets Whether the current sidebar has widgets.
 	 * @param string $sidebar_id  Sidebar ID.
 	 * @return bool
@@ -1172,6 +1199,8 @@ final class WP_Customize_Widgets {
 	 * @since 3.9.0
 	 * @access public
 	 *
+	 * @global array $wp_registered_widgets
+	 *
 	 * @param array $widget_ids List of widget IDs.
 	 * @return array Parsed list of widget IDs.
 	 */
@@ -1189,6 +1218,9 @@ final class WP_Customize_Widgets {
 	 * @since 3.9.0
 	 * @access public
 	 *
+	 * @global array $wp_registered_widget_updates
+	 * @global array $wp_registered_widget_controls
+	 *
 	 * @param  string $widget_id Widget ID.
 	 * @return WP_Error|array Array containing the updated widget information.
 	 *                        A WP_Error object, otherwise.