A lot of the information design being done in technical communications today is what I think we can fairly call a linear/hypertext hybrid. Perhaps this is a necessary stage in our evolution from static linear paper manuals to dynamic hypertext information sets, but if so we have lingered in it far too long, and we are still producing and using tools and systems that are designed for the linear/hypertext hybrid rather than for true hypertext.
This thought occurred to me when reading Tom Johnson’s post on collapsing sections. As I commented there, collapsing sections are a symptom of the linear/hypertext hybrid. They are hypertext in the sense that you have to click a link to open the section, but still linear in the sense that they are written and organized as part of a single consecutive narrative. As such they have some pretty significant problems, as I noted in my comment on Tom’s post.