Hypertext narrative contrasted with interactive fiction

As I continue to figure out the different types of interactive storytelling out there, this dialogue between Emily Short and Mark Bernstein was helpful:

Emily: I like the distinction between calligraphic (sparsely linked) and sculptural hypertext (densely-linked, controlled by rules); though I think I tend to associate hypertext only with the former kind of work. When I hear “hypertext”, I assume something with minimal modeling behind the scenes.

Mark: This is an interesting – perhaps the interesting – distinction between the IF and hyperfiction traditions. IF is inclined to model story, while HT is inclined to model — or to believe itself to be modeling, plot. I don’t believe this has ever been stated clearly. Has it?

UPDATE: Mark Rickerby gets at something similar:

The core distinction [between parser games and choice fiction] is between the story unfolding through actions modifying a world model and the story developing through predefined narrative branches.