It describes an animation framework as well as a set of base XML animation elements suitable for integration with XML documents. It is based upon the SMIL 1.0 timing model, with some extensions. A set of basic animation elements are also described that can be applied to any XML-based language. A language with which this module is integrated is referred to as a host language. A document containing animation elements is referred to as a host document.
Animation is inherently time-based.
SMIL Animation is defined in terms of the SMIL timing model. The animation capabilities are described by new elements with associated attributes and semantics, as well as the SMIL timing attributes. Animation is modeled as a function that changes the presented value of a specific attribute over time. This version of SMIL Animation may not be used with documents that otherwise contain timing. The SMIL Animation specification has been produced as part of the W3C Synchronized Multimedia Activity .