Researchers working on the semantics of programminglanguages came together in The Netherlands in June 1992 fora workshop on Semantics - Foundations and Applications. Thisvolume is based on the meeting and contains materialprepared by the lecturers after the meeting took place. Thevolume includes papers on a wide range of topics in bothfoundationsand applications, including:- Comparative domain theory, category theory, informationsystems,- Concurrency: process algebras, asynchronous communication,action semantics, trace nets, process refinement, concurrentconstraint programming,- Predicate transformers, refinement,weakest preconditions,- Comparative semantics of programming concepts, fullabstraction,- Reasoning about programs: total correctness, epistemiclogic,- Logic programming,- Functional programming: sequentiality, integration withconcurrency, applied structured operational semantics. The workshop was an activity of the project REX (ResearchandEducation in Concurrent Systems) sponsored by theNetherlands NFI (NationaleFaciliteit Informatica)Programme.