Cesar Brea has written a wiki page on OpenACS.org that explains the "what" and the "why" surrounding the recent announcement that OpenACS/.LRN is the first to support the IMS LD specification for designing open-ended, collaborative learning experiences online. Currently this is a univesity research project but as Solution Grove works to find the synery between online games, communities, and learning we expect this sort of functionality to be extremely useful.
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