Index: src/wp-includes/kses.php
===================================================================
--- src/wp-includes/kses.php	(revision 39621)
+++ src/wp-includes/kses.php	(working copy)
@@ -1449,6 +1449,7 @@
  * This function helps wp_kses_normalize_entities() to only accept valid Unicode
  * numeric entities in hex form.
  *
+ * @since  2.7.0
  * @access private
  *
  * @param array $matches preg_replace_callback() matches array
@@ -1465,6 +1466,8 @@
 /**
  * Helper function to determine if a Unicode value is valid.
  *
+ * @since  2.7.0
+ *
  * @param int $i Unicode value
  * @return bool True if the value was a valid Unicode number
  */
@@ -1497,6 +1500,8 @@
 /**
  * Regex callback for wp_kses_decode_entities()
  *
+ * @since  2.9.0
+ *
  * @param array $match preg match
  * @return string
  */
@@ -1507,6 +1512,8 @@
 /**
  * Regex callback for wp_kses_decode_entities()
  *
+ * @since  2.9.0
+ *
  * @param array $match preg match
  * @return string
  */