By the way, you'll notice that El Soberano is an AMP-first site (using the AMP plugin); it is very fast for mobile and desktop visitors, and there are no paired AMP URLs anywhere since it is using AMP as the site's web framework.

The site is also a progressive web app (using the PWA feature plugin), enabling add-to-homescreen functionality and access to previously-visited URLs while being offline. Eventually the offline template should also include a list of the pages that are available for offline viewing, newspack-theme#357.