Invited Papers -- Formal Methods in CafeOBJ -- The Essence of XML (Preliminary Version) -- To the Gates of HAL: A HAL Tutorial -- Tutorial Paper -- Functional Logic Design Patterns -- Constraints -- On Consistency and Width Notions for Constraint Programs with Algebraic Constraints -- Solving Mixed Quantified Constraints over a Domain Based on eal Numbers and erbrand Terms -- Program Transformation and Analysis -- On the Correctness of the Factoring Transformation -- Lambda-Lifting in Quadratic Time -- Semantics -- The Well-Founded Semantics in Normal Logic Programs with Uncertainty -- Linearly Used Effects: Monadic and CPS Transformations into the Linear Lambda Calculus -- Coinductive Interpreters for Process Calculi -- Rewriting -- Descendants and Head Normalization of Higher-Order Rewrite Systems -- Narrowing Failure in Functional Logic Programming -- Compilation Techniques -- The HiPE/x86 Erlang Compiler: System Description and Performance Evaluation -- Dynamic-Cut with Definitional Trees -- Programming Methodology -- The Head Condition and Polymorphic Recursion -- Structural Abstraction and Application in Logic Programming -- VM?: A Functional Calculus for Scientific Discovery.