Steven Pemberton is a senior researcher at the CWI, Amsterdam, the Dutchnational research institute for mathematics and computer science. Hehas been involved with the Web from the beginning, organising twoworkshops at the first WWW conference in 1994, and chairing the firstStyle Sheets Workshop in 1995. He is chair of the HTML and FormsWorking Groups, and co-author of amongst others HTML, CSS, XHTML and XForms. He is editor-in-chief of ACM/interactions.