This specification introduces features to HTML and the DOM that ease the authoring of Web-based applications. Additions include the context menus, a direct-mode graphics canvas, inline popup windows, server-sent events, and more.
S. Bechhofer, R. Volz, and P. Lord. Proc. of the First International Semantic Web Conference 2003 (ISWC 2003), October 21-23, 2003, Sanibel Island, Florida, page 659-675. (2003)