http://www.rfc-editor.org/rfc/rfc4918.txt
RFC 4918: HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV), L. Dusseault2007-06-01T23:00:00-00:00RFC 2518 was published in February 1999, and this specification obsoletes RFC 2518 with minor revisions mostly due to interoperability experience. [STANDARDS-TRACK]