A text can be scanned easily in print, especially when elements of typography and art aid in the process.
What is a reader looking for when he is scanning print? In some cases subheadings -- often in a larger, darker typeface -- inform him that there is something of interest; at other times he may be scanning the text for an interesting word or phrase (either one he has in mind or one that will just catch his eye); sometimes he wants a quick idea of what the whole text contains -- and then he may never read it again, or he may go back and read all or part of it closely.
For a hypertext environment that follows something like an architectural metaphor a map can provide an overview. But an architectural metaphor is not enough.
It depends essentially on time. Time you get when when you are scanning hypertextual posts. And what is an hypertextual time when you read a simple map?
See that post with different algorithms in metabole
See the journal French Metablog with today different posts
Enter Hypertextual as a member