This standard defines the electronic representation of Learning Opportunities in order to facilitate their advertising and subsequent discovery by prospective learners.Key users of the standard will be: -those who provide opportunities for learning and wish to advertise them; -those who offer electronic search services that aggregate results from multiple Learning Opportunity providers; -those who wish to compare Learning Opportunities that have been represented electronically.The standard presents an abstract model for representing Learning Opportunities. The model specifies three resources about which metadata can be stored to facilitate advertising of Le