“…Six systems that do not require the user to specify particular indexes or files are Paperchase, which does not require users to specify type of search unless too many records are retrieved, LIAS and Library Corporation's Intelligent Catalog, which present the user with a kind of dictionary file of all headings, MUMS, which defaults to a general index, if a specific index is not specified, and CLSI's PACII and LS2000, which allow the user to do a keyword search of a term index that contains terms from all indexed fields (Beckley & Bleich, 1977;Beiser, 1987;Carson, 1983;Hildreth, 1985;Hisatsune, 1983;Horowitz & Bleich, 1981;Larson, 1983). In all of these systems, the user always has the option of specifying a type of search if so desired.…”