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An initiative of the Google, Bing, Yahoo and Russia-based Yandex search engines to define a common vocabulary for identifying data on Web pages. Launched in 2011, provides thousands of data descriptions for the things and actions in the world and endorses the Microdata, RDFa and JSON-LD syntaxes. See Semantic Web, Microdata, RDFa and JSON-LD.
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To qualify as "ssRwd" every page on the website passes 15 tests of mobile friendliness, responsive design, HSTS transport security, SPDY speed optimization, Schema.
The robust HTML5 player has support for social sharing, social events tracking, schema.
The next major milestone is that LRMI will be adopted by Schema.

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