In the Bookmarks Manager (Library) there is a toolbar with the Back and Forward button and three other buttons (Organize, Views, Import & Backup). * The first (gear) button is the Organize button with basic edit menu items for bookmarks * The second button is the Views button that allows to change the sort order for viewing purposes (doesn't sort permanently). * The third (star) button is the Import & Backup button that allows to backup and restore a JSON backup and import and export an HTML backup and import bookmarks from other browsers. Hover each button to see the tooltip or click each of them to see what they do. * https://support.mozilla.org/kb/how-do-i-use-bookmarks