LRI is presently developing an expert system prototype that applies part-whole inference to conventional order-of-battle files. A key element of this project yet to be considered is an integrated knowledge dictionary that would (a) help the analyst to better understand the knowledge base and its relationship to the ob data, (b) permit the analyst to develop and maintain his own knowledge bases without the assistance of a knowledge engineer, and (c) allow programmers to design and implement additional inference engines using a standardized interface to the data and knowledge base. This phase i effort would identify the content and functionality required of such a dictionary by means of "hands on" experimentation with the prototype system being developed.