At that time, HTML 4.01 had not been updated since 2000, and the World Wide Web Consortium (W3C) was focusing future developments on XHTML 2.0.
當時，HTML 4.01自2000年以來就沒有更新過，以及全球資訊網協會（W3C）正在將未來的發展重點放在XHTML 2.0。