[1] W3C Synchronized Multimedia Home page ( ( 版)) <http://www.w3.org/AudioVideo/>
[2] Synchronized Multimedia Activity Statement ( ( 版)) <http://www.w3.org/AudioVideo/Activity.html>
[3] SYMM Working Group Charter ( ( 版)) <http://www.w3.org/AudioVideo/2004/symm-wg-charter20060601.html>
[4] www-smil@w3.org Mail Archives ( ( 版)) <http://lists.w3.org/Archives/Public/www-smil/>
The SYMM (Synchronized Multimedia) Working Group and SYMM activity are now closed since 01 April 2012.