The structure of this system is simple – each instructor and learner gets a space of their own on the system that they are free to design as they like. Instructors can use the space to create an open online course. They would then use tags, RSS, APIs and other technology to connect their learning “node” with student work. Students would complete assignments on their own domain and submit the work they complete to the instructors node manually or automatically through connective software (RSS, APIs, etc) behind the scenes.
More details about open learning structure can be read at this blog post. The following diagram is an illustration of open learning: