Extra parameters in links
Two additional parameters that don't exist in the web interface can be set for keywords in Direct Commander: Parameter 1 and Parameter 2. The values of these parameters are automatically appended to the link that the user follows to the advertised site. By analyzing these parameters, you can track traffic for each keyword, display additional information to users, redirect them to the necessary page, etc. For more information, see the section Parameters transferred in ad URLs in the Help for Yandex.Direct.
The parameters' values can be specified in the Phrases tab or in the file from which the ads are imported.