What are Bookmarks?
Bookmarks are either internal links within a document or from a document to other related files. They enable the reader of an ETD to navigate through the document chapter by chapter and/or allow the reader to jump from the text of the document to other files containing tables, figures, charts, and so on. Bookmarks, while not required for ETDs with no related files, nevertheless make extremely long documents such as dissertations and theses easier to read.