Part I Domain of Rule-Based Systems -- Rules as a Knowledge Representation Paradigm -- Knowledge Engineering with Rules -- Selected Applications of Rule -- Part II Formal Models for Rules -- Formalism for Description of Decision Rules -- Formalized Integration of Rules and Processes -- Prototyping Structure of Rule Bases -- Handling Uncertainty in Rules -- Formalizing Interoperability in Rule Bases -- Part III Practical Studies in Semantic Knowledge Engineering -- Semantic Knowledge Engineering Approach -- Rule Interoperability with Expert System Shells -- Visual Software Modeling with Rules -- Using Rules to Support Software Testing -- Integrating Business Process Models with Rules -- Rule-Based Systems and Semantic Web -- Collaborative Knowledge Engineering with Wikis -- Designing Robot Control Logic with Rules -- Rules in Mobile Context-Aware Systems -- Index.