SMIL 3.0 smilText

The functionality described in these modules provide a new media type for use in SMIL presentations. This functionality is called smilText. Unlike other media types defined in the media object module, all of which are synonyms of the ref element, the smilText modules provide a text container element with an explicit content model for defining timed text. The smilText modules also define a set of additional elements and attributes to control timed text rendering. All smilText content is processed in a manner consistent with other SMIL media. This means, among other aspects, that smilText respects SMIL timing and layout behavior, including the semantics of the fit and fill attributes of SMIL Layout. The smilText Modules are composed of a BasicText module and two modules with additional functionality that build on top of the BasicText module: the TextStyling and TextMotion modules. These modules contain elements and attributes used to define in-line text content. The SmilText profile allows smilText to be used as an external format; this is described informally in Appendix B.