The about and mentions markups are properties of webpage schema which explicitly tell search engines like Google and Bing what topics a page is largely about and what other topics are simply being described or referred to. Полное руководство по работе со структурированными данными Email: defines the Corporation's email address: https://cyberbookmarking.com/story19346918/prestashop-twitter-feeds-widget-for-selected-categories-and-languages-options