The Quintus Objects package enables programmers to write object-oriented programs in Quintus Prolog. The objects in Quintus Objects are modifiable data structures that provide a clean and efficient alternative to storing data in the Prolog database.

This user's guide is neither an introduction to object-oriented programming nor an introduction to Quintus Prolog. A number of small, sample programs are described in this manual, and some larger programs are in the demo directory.