Index: src/wp-admin/includes/export.php
===================================================================
--- src/wp-admin/includes/export.php	(revision 37080)
+++ src/wp-admin/includes/export.php	(working copy)
@@ -23,7 +23,24 @@
  * @global wpdb    $wpdb
  * @global WP_Post $post
  *
- * @param array $args Filters defining what should be included in the export.
+ * @param array $args {
+ *     Optional. Default is to export all content except those with status 'auto-draft'.
+ *
+ *     @type string $content        If set, only content of this post type will be exported. 
+ *                                  Default is everything (via the 'all' default).
+ *     @type string $author         If set, only content by this author will be exported. Default is 
+ *                                  all authors.
+ *     @type string $category       If set and if $content is 'post' or 'all', only content assigned
+ *                                  to this category will be exported. Default is all categories.
+ *     @type string $start_date     If set and if $content is 'post' or 'all', this will be the start 
+ *                                  date. Default is earliest date. Date format is 'Y-m-d'.
+ *     @type string $end_date       If set and if $content is 'post' or 'all', this will be the end date.
+ *                                  Default is latest date. Date format is 'Y-m-d'
+ *     @type string $status         If set and if $content is 'post' or 'page', only centent of this status
+ *                                  will be exported. Default is all status except 'auto-draft'. Accepts
+ *                                  publish', 'pending', 'draft', 'auto-draft', 'future', 'private', 
+ *                                  'inherit', 'trash'.
+ * }
  */
 function export_wp( $args = array() ) {
 	global $wpdb, $post;