This may be more of an undergraduate thing, but since some undergraduates may peek in, I thought I would also post one of the uses for the highlighting and linking. In my History Class, my instructor is very accommodating and actually provides a handout sheet with her review questions for all the readings that she assigns from the books, handout and articles. When I am reading I take the time to do one of two things. Initially I highlighted areas that correspond with her review sheet and rename the highlight to reflect the question. Now I take the scanned review sheet and each question I link it either to the direct text or "snapshop" (depending of how long the text is). It may not sound like much but it really helps when I review.