The XML Core Working Group has published the Extensible Markup Language (XML) 1.0 Third Edition as a Proposed Edited Recommendation. The third edition is not a new version of XML. It brings the XML 1.0 Recommendation up to date with second edition errata, and clarifies its use of RFC 2119 key words like must, should and may. Comments are welcome through 1 December. Visit the XML home page.