9. An apparatus for automatically filling a form field in response to a speech utterance in a multimodal communications environment having a Web browser implementing a XHTML+VXML (X+V) markup language, the apparatus comprising a combination of hardware and software that implements: a parsing module for parsing an X+V markup language document to determine whether the X+V markup language document contains a synchronized voice field refers to a form field that is filled by a synchronization of speech and graphic inputs, and a user profile domain refers to form fields that are to be filled with data corresponding to a user profile; a grammar-generating module for dynamically generating at least one grammar corresponding to each determine synchronized voice field at runtime, the at least one grammar being based on a user profile and comprising a semantic interpretation string; and an auto-fill event module for creating an auto-fill event based upon the at least one grammar and responsive to the speech utterance, the auto-fill event causing the filling of the form field with data corresponding to the user profile and comprising at least some data not in the spoken utterance.
13. The apparatus of claim 9 , wherein the grammar-generating module comprises a browser configured to generate a voice markup language link grammar.