There are several projects with a general concept of tight linking between the text and visual elements in a document for presenting scientific information.
It can often be easier to illustrate a concept with an image. Technically at least, it’s a little trickier, for moving or three-dimensional objects.
Easily the most successful is video, witness the YouTube and it’s ilk. One problem with video is that really it wants simplified verbal presentation: if it gets to wordy, long-winded or technical, it loses the audience. Viewers would probably say they’d be better reading a book. The other is that you can’t interact with the objects in image in the way you might explore a 3-D object.

For a larger copy of this figure, visit the PLoS One site.
Enter a hybrid solution, text with links to trigger visual elements which let you zoom in, out and rotate 3-D images, or have them played as an animation. Previous solutions have really caught on beyond a niche application. Maybe it’s time has come?
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