One of the main things an ebook has over print books is the ability to search and navigate content. All ebooks will have a linked table of contents so that readers can easily access a particular chapter or section of work; however, there may also be active content that allows readers to follow a cross-reference link to another portion of the book or a hyperlink to an actual web page (depending on the device functionality). Readers may also be able to look up a word right from the page, highlight content, write notes, or share passages and reviews with others online.