Theodor Holm "Ted" Nelson (born June 17, 1937) is an American pioneer of information technology, philosopher, and sociologist. He coined the terms hypertext and hypermedia in 1963 and published them in 1965. Nelson coined the terms transclusion, virtuality, and intertwingularity (in Literary Machines} - wikipedia 
In computer science, transclusion is the inclusion of part or all of an electronic document into one or more other documents by hypertext reference - wikipedia
Project Xanadu is a much-misunderstood initiative to create a different kind of computer world based on a different kind of electronic document. The computer world is not just technicality and razzle-dazzle. It is a continual war over software politics and paradigms. OpenXanadu continues with ideas which are still radical.