3. The non-transitory computer-readable medium of claim 1 , wherein the computer-readable instructions for the VUIcontroller comprise a routine callable from a GUI markup document.
4. The non-transitory computer-readable medium of claim 3 , wherein the computer-readable instructions are stored on a server other than a computer that renders the GUI at run time of the GUI, wherein the computer that renders the GUI and the server are interconnected, at least in part, by the Internet.