[3] RFC 5261 は XML文書の差分を表現する XML 語彙 XML diff を定義しています。

[1] RFC 5261 - An Extensible Markup Language (XML) Patch Operations Framework Utilizing XML Path Language (XPath) Selectors (2017-06-18 17:36:09 +09:00) https://tools.ietf.org/html/rfc5261

[2] RFC Errata Report » RFC Editor (2017-06-27 18:42:54 +09:00) https://www.rfc-editor.org/errata_search.php?rfc=5261