5. A computer comprising a computer processor and a computer memory operatively coupled to the computer processor, wherein the computer memory stores computer program instructions for providing oral modification of an automatic speech recognition (‘ASR’) lexicon of an ASR engine, and wherein the computer processor executes the computer program instructions to: receive, from a user through a multimodal application, speech for recognition, wherein the ASR engine comprises an ASR lexicon of words that the ASR engine recognizes, and the ASR lexicon does not contain at least one word of the speech for recognition; indicate through the multimodal application to the user that the ASR lexicon does not contain the word by returning a message that explicitly indicates that the ASR engine does not recognize the word; receive from the user through the multimodal application an oral instruction to add the word to the ASR lexicon, the oral instruction accompanied by an oral spelling of the word from the user; and execute the instruction.
5. A computer comprising a computer processor and a computer memory operatively coupled to the computer processor, wherein the computer memory stores computer program instructions for providing oral modification of an automatic speech recognition (‘ASR’) lexicon of an ASR engine, and wherein the computer processor executes the computer program instructions to: receive, from a user through a multimodal application, speech for recognition, wherein the ASR engine comprises an ASR lexicon of words that the ASR engine recognizes, and the ASR lexicon does not contain at least one word of the speech for recognition; indicate through the multimodal application to the user that the ASR lexicon does not contain the word by returning a message that explicitly indicates that the ASR engine does not recognize the word; receive from the user through the multimodal application an oral instruction to add the word to the ASR lexicon, the oral instruction accompanied by an oral spelling of the word from the user; and execute the instruction. 7. The computer of claim 5 wherein the computer processor receives the instruction to add the at least one word to the ASR lexicon by receiving in the ASR engine from the multimodal application the spelled word in text format.