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The Virtual World Framework (VWF) provides a synchronized collaborative 3D environment for the web browser. Continuing the OpenCroquet research effort, VWF allows easy application creation, and provides a simple interface to allow multiple users to interact with the state of the application that is synchronized across clients, using the notion of virtual time. A VWF application is made up of prototype components, which are programmed in JavaScript, that allows a shared code and behaviours used in distributed computation, to be modified at runtime. OMeta is a new object-oriented language for pattern matching. It is based on a variant of Parsing Expression Grammars (PEGs) which have been extended to handle arbitrary data types. OMeta's general-purpose pattern matching facilities provide a natural and convenient way for programmers to implement tokenizers, parsers, visitors, and tree transformers.
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