note 70737 added to function.preg-replace-callback

There is this regex used in example in manual: #\[indent]((?:[^[]|\[(?!/?indent])|(?R))+)\[/indent]# i wonder what does (?R) do? couln'd find it anywhere. ---- Server IP: 147.32.160.17 Probable Submitter: 147.32.108.145 ---- Manual Page -- http://www.php.net/manual/en/function.preg-replace-callback.php Edit -- https://master.php.net/note/edit/70737 Del: integrated -- https://master.php.net/note/delete/70737/integrated Del: useless -- https://master.php.net/note/delete/70737/useless Del: bad code -- https://master.php.net/note/delete/70737/bad+code Del: spam -- https://master.php.net/note/delete/70737/spam Del: non-english -- https://master.php.net/note/delete/70737/non-english Del: in docs -- https://master.php.net/note/delete/70737/in+docs Del: other reasons-- https://master.php.net/note/delete/70737 Reject -- https://master.php.net/note/reject/70737 Search -- https://master.php.net/manage/user-notes.php