. . . https://www.example.com/product.php?item=swedish-fish&trackingid=1234&sessionid=5678 and Sphider-plus will understand that the duplicates all refer to the canonical URL: . . .
. . . This authentication tag needs to be written as: The content value (here e.g. 1234) is defined by the administrator of the search engine. As part of the approval form, an additional field needs to be filled in by the admin. So, individual. . .