This field contains website pages where the robot will go on the first round. Usually, this field indicates only the main page, as users, when visiting websites get on it. The 'Referrer' field, opposite the website pages, specifies the website from which a visitor gets to an appropriate website page. For a single page, you can specify several referers. You can specify any number of pages and their corresponding referers. If the 'Referer' field is not filled out, the robots will always get to an appropriate page directly, without an intermediary (by entering a website address directly into a browser).