ISR11 Design Consideration for Time Shared Automatic Documentation Centers chapter M. E. Lesk Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. for example, there special dictionaries might be constructed for out-of- date material. Dictionaries could also be constructed for different classes of users; for example, circuit designers would probably [OCRerr] the electrical section of the thesaurus arranged in a manner different from that desired by the manufacturers of electrical equipment. Foreign-language processing would also have to be approached by constructing separate dictionaries. The computer imist also be provided with a set of error-detecting mechanisms. Users could then be notified of any words used that are not in the dictionary, or of any questions asked for which no relevant material appears in the collection. Users should also be warned if a request could produce an excessive amount of output, so that they could either rephrase the request by making it more specific, or restrict the output to summary and review papers only. It may be expected that the documentation system described here would be of great interest to an active group of researchers if it were properly implemented and convenient to use, and its ser'nces would be well used. [OCRerr]. practicalities Some more detailed design questions can now be considered with specific reference to the SMART project. The first question that arises concerns the subject area which should be used for the proposed syst[OCRerr][OCRerr]ri. Numerous areas could be suggested, but the following requirements might be used to make a decision; 1) it should be a rapidly developing field, to reduce the amount of back-issuing which is necessary to produce a really useful system.