<http://schema.org/description>
"Back in November, Google introduced app indexing, which basically lets a searcher on Android click on a Google search result and end up in an app, directly to the piece of content within that app. It "^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-app-indexing-expands-18360.html>