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MetaCase (www.metacase.com) has released version 5.0 of their flagship software development tool, MetaEdit+.
MetaEdit+ 5.0 lets you create graphical domain-specific languages and code generators in a few hours. The graphical notations go beyond plain icons and links; they can change on the fly depending on model data, be nested to unlimited depth, retrieved from libraries, and have a fixed or dynamically varying number of ports to connect to. The new features allow domain-specific models to mimic closely the problem domains they describe.
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