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Hypertext syntagmas: cinematic narration with links
reductions

Should be obvious that nodes are not reducible like words can. Of course a node can be reduced to its component parts (if they are thought of as writing) but that is hardly what constitutes the node. A node could just as easily contain a sound, a film, an image, a letter, or any combination of these.

Adrian Miles: Hypertext syntagmas: cinematic narration with links
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Journal of Digital Information