The experimenters inferred that the users did not understand the idea of the partial matches, which at that stage were simply labelled as ``Thesaurus Terms''. Two users thought that the words were the result of their search ; one thought that he had to remove query terms which had not come up in the list; two added a thesaurus term and then had no idea what to do next; four ignored them completely.
The major problem at this time was that when users first entered a query they were presented with the partial matches, and were then expected to click ``Search'' --- either immediately or after adding one or more thesaurus words to the query. This was found to be very confusing, since other systems with which they were familiar did not present an intermediate step between typing a query and retrieving documents.
To tackle this problem, the system was changed to display partial matches simultaneously with the first document of the retrieved document set. The intention was that users would then be able to add thesaurus terms before doing an expanded search, rather than before searching for the first time. The name of the list was also changed to ``Suggested Words'', which seemed less ambiguous.
One omission from this version of the system was that the lead-in to preferred term link was not automatically exploited. In the LBS OPAC (Tinlib), when the user types in a lead-in term such as ``acquisitions'', the preferred term ``mergers'' is added to the query. At this stage, no such behind the scenes work was done in ENQUIRE and as a result users got different results from the two systems for the same query.