A JavaScript notation embedded within a tag while in the and things of the HTML site. The markup just isn't interleaved with the user-seen text, which makes nested data things much easier to express, including the Nation of a PostalAddress of the MusicVenue of an Event. Details-vocabulary.org markup is now https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html