diff --git a/wp-admin/includes/deprecated.php b/wp-admin/includes/deprecated.php
index f6fa0a2ada..fde377b6b0 100644
--- a/wp-admin/includes/deprecated.php
+++ b/wp-admin/includes/deprecated.php
@@ -80,9 +80,9 @@ function get_udims( $width, $height ) {
  * @deprecated Use wp_category_checklist()
  * @see wp_category_checklist()
  *
- * @param unknown_type $default
- * @param unknown_type $parent
- * @param unknown_type $popular_ids
+ * @param int $default
+ * @param int $parent
+ * @param array $popular_ids
  */
 function dropdown_categories( $default = 0, $parent = 0, $popular_ids = array() ) {
 	_deprecated_function( __FUNCTION__, '2.6', 'wp_category_checklist()' );
@@ -98,7 +98,7 @@ function dropdown_categories( $default = 0, $parent = 0, $popular_ids = array()
  * @deprecated Use wp_link_category_checklist()
  * @see wp_link_category_checklist()
  *
- * @param unknown_type $default
+ * @param int $default
  */
 function dropdown_link_categories( $default = 0 ) {
 	_deprecated_function( __FUNCTION__, '2.6', 'wp_link_category_checklist()' );
@@ -130,12 +130,12 @@ function get_real_file_to_edit( $file ) {
  * @deprecated Use wp_dropdown_categories()
  * @see wp_dropdown_categories()
  *
- * @param unknown_type $currentcat
- * @param unknown_type $currentparent
- * @param unknown_type $parent
- * @param unknown_type $level
- * @param unknown_type $categories
- * @return unknown
+ * @param int $currentcat
+ * @param int $currentparent
+ * @param int $parent
+ * @param int $level
+ * @param array $categories
+ * @return bool|null
  */
 function wp_dropdown_cats( $currentcat = 0, $currentparent = 0, $parent = 0, $level = 0, $categories = 0 ) {
 	_deprecated_function( __FUNCTION__, '3.0', 'wp_dropdown_categories()' );
@@ -170,12 +170,11 @@ function wp_dropdown_cats( $currentcat = 0, $currentparent = 0, $parent = 0, $le
  * @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.
- * @param unknown_type $sanitize_callback A callback function that sanitizes the option's value.
- * @return unknown
+ * @param callable $sanitize_callback A callback function that sanitizes the option's value.
  */
 function add_option_update_handler( $option_group, $option_name, $sanitize_callback = '' ) {
 	_deprecated_function( __FUNCTION__, '3.0', 'register_setting()' );
-	return register_setting( $option_group, $option_name, $sanitize_callback );
+	register_setting( $option_group, $option_name, $sanitize_callback );
 }
 
 /**
@@ -186,14 +185,13 @@ function add_option_update_handler( $option_group, $option_name, $sanitize_callb
  * @deprecated Use unregister_setting()
  * @see unregister_setting()
  *
- * @param unknown_type $option_group
- * @param unknown_type $option_name
- * @param unknown_type $sanitize_callback
- * @return unknown
+ * @param string $option_group
+ * @param string $option_name
+ * @param callable $sanitize_callback
  */
 function remove_option_update_handler( $option_group, $option_name, $sanitize_callback = '' ) {
 	_deprecated_function( __FUNCTION__, '3.0', 'unregister_setting()' );
-	return unregister_setting( $option_group, $option_name, $sanitize_callback );
+	unregister_setting( $option_group, $option_name, $sanitize_callback );
 }
 
 /**
@@ -336,7 +334,7 @@ class WP_User_Search {
 	 *
 	 * @since 2.1.0
 	 * @access private
-	 * @var unknown_type
+	 * @var mixed
 	 */
 	var $results;
 
@@ -345,7 +343,7 @@ class WP_User_Search {
 	 *
 	 * @since 2.1.0
 	 * @access private
-	 * @var unknown_type
+	 * @var string
 	 */
 	var $search_term;
 
@@ -390,7 +388,7 @@ class WP_User_Search {
 	 *
 	 * @since 2.1.0
 	 * @access private
-	 * @var unknown_type
+	 * @var int
 	 */
 	var $first_user;
 
@@ -462,7 +460,7 @@ class WP_User_Search {
 	 *
 	 * @since 2.1.0
 	 * @access private
-	 * @var unknown_type
+	 * @var WP_Error
 	 */
 	var $search_errors;
 
@@ -471,7 +469,7 @@ class WP_User_Search {
 	 *
 	 * @since 2.7.0
 	 * @access private
-	 * @var unknown_type
+	 * @var string
 	 */
 	var $paging_text;
 
@@ -1128,8 +1126,7 @@ function wp_update_theme($theme, $feedback = '') {
  * @since 2.0.0
  * @deprecated 3.7.0
  *
- * @param unknown_type $id
- * @return unknown
+ * @param int|bool $id
  */
 function the_attachment_links( $id = false ) {
 	_deprecated_function( __FUNCTION__, '3.7' );
diff --git a/wp-admin/includes/media.php b/wp-admin/includes/media.php
index 7f0f0c7ff5..143a928621 100644
--- a/wp-admin/includes/media.php
+++ b/wp-admin/includes/media.php
@@ -1712,7 +1712,7 @@ function media_upload_header() {
  *
  * @since 2.5.0
  *
- * @param unknown_type $errors
+ * @param array $errors
  */
 function media_upload_form( $errors = null ) {
 	global $type, $tab, $is_IE, $is_opera;
diff --git a/wp-includes/class-IXR.php b/wp-includes/class-IXR.php
index b0a0f28d99..e3ebddd28b 100644
--- a/wp-includes/class-IXR.php
+++ b/wp-includes/class-IXR.php
@@ -151,7 +151,7 @@ class IXR_Value {
     /**
      * Checks whether or not the supplied array is a struct or not
      *
-     * @param unknown_type $array
+     * @param array $array
      * @return boolean
      */
     function isStruct($array)
diff --git a/wp-includes/rss.php b/wp-includes/rss.php
index 7759003c65..a7c43f44de 100644
--- a/wp-includes/rss.php
+++ b/wp-includes/rss.php
@@ -579,8 +579,8 @@ function _fetch_remote_file($url, $headers = "" ) {
  * @package External
  * @subpackage MagpieRSS
  *
- * @param unknown_type $resp
- * @return unknown
+ * @param array $resp
+ * @return MagpieRSS|bool
  */
 function _response_to_rss ($resp) {
 	$rss = new MagpieRSS( $resp->results );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index fd921bf506..a590606958 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-alpha-30200';
+$wp_version = '4.1-alpha-30201';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.