This article, which will be published in the journal CALL, talks about what the web and multimedia are doing to reading. It talks about visual representation of text structure.

The three themes in the article are

Web text is radically different from traditional text form,
with its pages of dense text and its line wrap.

Visible structure cues can enhance accessibility of text
and reduce the reader's cognitive load.

There is a need for a framework
for characterizing accessibility of text structure.