A marker (a piece of paper or ribbon) placed between the pages of a book to mark the reader's place; SYN. bookmarker.

1. A marker inserted at a specific point in a document to which the user may wish to return for later reference.
2. In Netscape Navigator, a link to a Web page or other URL that a user has stored in a local file in order to return to it later. See also Favorites folder, hotlist, URL.