The W3C (World Wide Web Consortium) SYMM Working Group has published the the Proposed Recommendation of “Synchronized Multimedia Integration Language (SMIL 3.0),” pronounced “smile.” SMIL 3.0 allows authors to write interactive multimedia presentations. Using SMIL 3.0, an author may describe the temporal behavior of a multimedia presentation, associate hyperlinks with media objects and describe the layout of the presentation on a screen. SMIL 3.0 is a modular XML application: its components may be used in other XML formats. SMIL also defines mobile profiles that incorporate features useful within the industry. Comments are welcome through 6 November. http://www.w3.org/TR/2008/PR-SMIL3-20081006/