Informal Notes on the Department of Energy Abstracts The material includes short abstracts from the Department of Energy. The data has been changed to standard SGML format, as shown below. DOE1-96-0001 One of the weakest aspects of Prolog is in its access to clauses. This weakness is lamentable as it makes one of Prolog's greatest strengths, its ability to treat programs as data and data as programs, difficult to exploit. This paper proposes modifications to Prolog and shows how they circumvent important problems in Prolog programming in a practical way. For example, the proposed modifications permit Prolog programs that perform efficient database query (join) processing, coroutining, and abstract machine interpretation. These modifications have been used successfully at UCLA, and should be easy to implement within any existing Prolog system. There are no additional fields in the DOE abstracts, but there are some very short abstracts. Some punctuation ("&", ">", and "<") has been converted to SGML representation ("&", ">", "&less;").