66. A data processing system as set forth in claim 65, wherein: said command to invoke the second nested application program includes specifying an intended interaction language; and said means for selecting the desired interaction language further selects from the intended interaction language.
67. A data processing system as set forth in claim 66, further including: means, operative in response to a termination of the second nested application program, for setting the current interaction language to a previous interaction language specified in the means for storing nested language information; and means for removing the previous interaction language from the means for storing nested language information.