diff --git a/src/wp-admin/includes/bookmark.php b/src/wp-admin/includes/bookmark.php
index 622ea06955..6cc6683f02 100644
--- a/src/wp-admin/includes/bookmark.php
+++ b/src/wp-admin/includes/bookmark.php
@@ -142,13 +142,34 @@ function get_link_to_edit( $link ) {
 }
 
 /**
- * Inserts/updates links into/in the database.
+ * Inserts a link into the database, or updates an existing link.
+ *
+ * Runs all the necessary sanitizing, provides default values if arguments are missing,
+ * and finally saves the link.
  *
  * @since 2.0.0
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *
- * @param array $linkdata Elements that make up the link to insert.
+ * @param array $linkdata {
+ *     Elements that make up the link to insert.
+ *
+ *     @type int    $link_id          Optional. The ID of the existing link if updating.
+ *     @type string $link_url         The URL the link points to.
+ *     @type string $link_name        The title of the link.
+ *     @type string $link_image       Optional. A URL of an image.
+ *     @type string $link_target      Optional. The target element for the anchor tag.
+ *     @type string $link_description Optional. A short description of the link.
+ *     @type string $link_visible     Optional. 'Y' means visible, anything else means not.
+ *     @type int    $link_owner       Optional. A user ID.
+ *     @type int    $link_rating      Optional. A rating for the link.
+ *     @type string $link_updated     Optional. When the link was last updated.
+ *     @type string $link_rel         Optional. A relationship of the link to you.
+ *     @type string $link_notes       Optional. An extended description of or notes on the link.
+ *     @type string $link_rss         Optional. A URL of an associated RSS feed.
+ *     @type int    $link_category    Optional. The term ID of the link category.
+ *                                    If empty, uses default link category.
+ * }
  * @param bool  $wp_error Optional. Whether to return a WP_Error object on failure. Default false.
  * @return int|WP_Error Value 0 or WP_Error on failure. The link ID on success.
  */
@@ -274,7 +295,7 @@ function wp_set_link_cats( $link_id = 0, $link_categories = array() ) {
  *
  * @since 2.0.0
  *
- * @param array $linkdata Link data to update.
+ * @param array $linkdata Link data to update. See wp_insert_link() for accepted arguments.
  * @return int|WP_Error Value 0 or WP_Error on failure. The updated link ID on success.
  */
 function wp_update_link( $linkdata ) {