21. The computer-implemented method of claim 18 wherein combining the processing of responses in the extra answer property with the processing of responses in the extra answer property of said another control identified in the imported extra answer property includes associating a grammar for the processing of responses in the extra answer property of said another control identified in the imported extra answer property, said grammar being differentiated from a grammar for processing other responses associated with the extra answer property.
22. The computer-implemented method of claim 21 wherein associating a grammar for the processing of responses m the extra answer property of said another control identified in the imported extra answer property includes using a unique identifier for each of the extra answers.