<P> Recommendations can sometimes be implemented incorrectly, partially, or not at all, but many standards define two or more levels of conformance that developers must follow if they wish to label their product as W3C - compliant . </P> <P> A recommendation may be updated or extended by separately - published, non-technical errata or editor drafts until sufficient substantial edits accumulate for producing a new edition or level of the recommendation . Additionally, the W3C publishes various kinds of informative notes which are to be used as references . </P> <P> Unlike the ISOC and other international standards bodies, the W3C does not have a certification program . The W3C has decided, for now, that it is not suitable to start such a program, owing to the risk of creating more drawbacks for the community than benefits . </P> <P> The Consortium is jointly administered by the MIT Computer Science and Artificial Intelligence Laboratory (CSAIL, located in Stata Center) in the USA, the European Research Consortium for Informatics and Mathematics (ERCIM) (in Sophia Antipolis, France), Keio University (in Japan) and Beihang University (in China). The W3C also has World Offices in sixteen regions around the world . The W3C Offices work with their regional web communities to promote W3C technologies in local languages, broaden the W3C's geographical base and encourage international participation in W3C Activities . </P>

8. name 10 world wide web (www) standards that the w3c develops and maintains