1. Select the item for which you want to specify a bookmark, or click the location where you want to insert a bookmark. 2. Click Bookmarks on the Insert menu. 3. Under Book Signature, type or select a book signature. 4. The book signature must start with a letter, which can contain numbers, but can't contain spaces. You can use underscore characters to separate words, for example, "Title _ 1". Click the "Add" button. 2. Display the bookmark 1. Click Options on the Tools menu, and then click the View tab. 2. Select the bookmark check box. If a bookmark is specified for the content, the bookmark will appear in the form of brackets ([…]) (brackets are only displayed on the screen and will not be printed). If it is a bookmark specified for a location, the bookmark will be displayed as an I mark. 3. Delete the bookmark 1. Click Bookmarks on the Insert menu. 2. Click the signature of the book to be deleted, and then click the "Delete" button. Note To Delete the bookmark of an item marked with bookmarks, such as a text block or other elements, select the item and press the delete key.