Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
A bookmark is a link represented by text in the Bookmarks palette. Instead of creating an activation area on the document page, you create a text list in the Bookmarks palette that is linked to different views or pages in the document.
You can use electronic bookmarks as you would paper bookmarks—to mark a place in a document that you want to recall or return to later. You can also use bookmarks to create a brief custom outline of a document or to open other documents.