https://www.w3.org/news/2014/w3c-invites-implementations-of-xpath-3-1-xquery-3-1-xqueryx-3-1/
W3C Invites Implementations of XPath 3.1, XQuery 3.1, XQueryX 3.1 | 2014 | News | W3C
The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web...
xpath 3 1w3cinvitesimplementations