XHTML+SMIL
XHTML+SMIL is a W3C Note that describes an integration of SMIL semantics with XHTML and CSS. It is based generally upon the HTML+TIME submission. The language is also known as HTML+SMIL. The XHTML+SMIL language profile shares many modules with the standard SMIL language profiles, including the core modules of timing, media objects, linking, animation, transitions and content control.