Hypertext navigation means not only traversing a space between two points in the narrative.To Terry Harpold, it means as well electing to diverge from a predetermined course. The possibility that the reader may choose to digress from a path of the narrative, and remain within a field/terrain that is still identifiably that of the text she is reading, greatly complicates metaphors of intentional movement that may be applied to the act of reading.You might not get there, and something might happen to you along the way. The digressions of hypertexts are narrative instances of slippages in the fabric of language from which they are woven. The link serves not only to join the threads it associates, but also to circumscribe a place where the threads are divided from one another.
The link is where the narrative takes a turn around a place that is inaccessible because you can only encircle it.
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See that post with different algorithms in metabole
