Index: src/wp-login.php
===================================================================
--- src/wp-login.php	(revision 44362)
+++ src/wp-login.php	(working copy)
@@ -27,10 +27,15 @@
  *
  * @since 2.1.0
  *
+ * @global string $error Error when false is returned
+ * @global string $interim_login
+ * @global string $action The action to take.
+ *
  * @param string   $title    Optional. WordPress login Page title to display in the `<title>` element.
  *                           Default 'Log In'.
  * @param string   $message  Optional. Message to display in header. Default empty.
  * @param WP_Error $wp_error Optional. The error to pass. Default is a WP_Error instance.
+ *
  */
 function login_header( $title = 'Log In', $message = '', $wp_error = null ) {
 	global $error, $interim_login, $action;