Validating a page
It also prevents automated SPAM posts, out of the box and without relying on CAPTCHA by using honeypots.
The airplanes of the Aircraft Operations Center (AOC) are flown in support of NOAA's mission to promote global environmental assessment, prediction and stewardship of the Earth's environment.
It is a product of the XML Core Working Group as part of the XML Activity. As a convenience to readers, it incorporates the changes dictated by the accumulated errata (available at to the Fourth Edition of XML 1.0, dated 16 August 2006.
The English version of this specification is the only normative version. In particular, erratum [E09] relaxes the restrictions on element and attribute names, thereby providing in XML 1.0 the major end user benefit currently achievable only by using XML 1.1.
Most of the errata in the list provide a rationale for the change.
The errata list for this fifth edition is available at A Test Suite is maintained to help assessing conformance to this specification.This section describes the status of this document at the time of its publication. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at