diff -u b/includes/menu.inc b/includes/menu.inc
--- b/includes/menu.inc
+++ b/includes/menu.inc
@@ -229,16 +229,16 @@
 define('MENU_FOUND', 1);
 
 /**
- * Internal menu status code -- Not found.
+ * Menu status code -- Not found.
  *
  * This can be used as the return value from a page callback, although it is
- * preferable to use a load function in an array element of hook_menu() return
- * value.
+ * preferable to use a load function to accomplish this; see hook_menu()
+ * documentation for details.
  */
 define('MENU_NOT_FOUND', 2);
 
 /**
- * Internal menu status code -- Access denied.
+ * Menu status code -- Access denied.
  *
  * This can be used as the return value from a page callback, although it is
  * preferable to use an access callback in an array element of hook_menu()