a microdata format for marking up a website: schema.org

• http://www.heise.de/ct/ausgabe/2016-19-Wie-lokale-Anbieter-ihren-Web-Auftritt-auf-Besucherwuensche-hin-optimieren-koennen-3306807.html = http://heise.de/-3306807 – the article (in German) that pointed me to “schema.org”
• https://en.wikipedia.org/wiki/schema.org
• http://getschema.org – “a wiki with markup examples”
• https://schema.org
• https://schema.org/docs/gs.html
• https://schema.org/LocalBusiness
• https://schema.org/openingHours – a microdata property describing “opening hours”
• https://meta.schema.org/OpeningHoursSpecification – I am a little confused, how openingHours, OpeningHoursSpecification, and specialOpeningHoursSpecification are to be distinguished.
• https://meta.schema.org/specialOpeningHoursSpecification

And this page lists quite a few more interesting pages:

• https://meta.schema.org/Intangible

like

• https://meta.schema.org/JobPosting
• https://meta.schema.org/ComputerLanguage

…:

• http://getschema.org/index.php?title=OpeningHoursSpecification

…:

• https://RuleTheWeb.org – “a Firefox extension creating semantic links”
• https://github.com/jcdarwin/microdata.reveal – “a Chrome browser extension to display embedded microdata to the user”
• https://chrome.google.com/webstore/detail/microdatareveal/olapakiakkblfdaajcifgldandnikpdh