A declarative logic programming system with first-class relations
embedded in a pure functional subset of Scheme. The system has true
unions, fair scheduling, lexically-scoped logical variables,
set-theoretical semantics, high performance without cuts
Functional XML parsing framework: SAX/DOM and SXML parsers with
support for XML Namespaces and validation. Related to SSAX are SXPath
queries and SXML transformations, with applications to XML/HTML
authoring and literate Scheme and XML programming.
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