The about and mentions markups are properties of webpage schema which explicitly inform search engines like Google and Bing what subjects a page is largely about and what other matters are merely getting mentioned or referred to. The event has been postponed to a later on date, nevertheless the date https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html