[1] [CITE@en[List of HTTP status codes - Wikipedia, the free encyclopedia]]
( ([TIME[2012-02-16 13:47:30 +09:00]] 版))
<http://en.wikipedia.org/wiki/List_of_HTTP_status_codes>

[2] [CITE@en[HttpRewriteModule]]
( ([TIME[2013-08-23 07:47:11 +09:00]] 版))
<http://wiki.nginx.org/HttpRewriteModule#return>