In 2012, Google launched the data highlighter tool to give less technical webmasters a way to communicate markup of a page or group of pages …
Source: 9
More from my site
Google Search Console Beta Launch Should Give Us A Years Worth Of Data
Google: On-Page Markup & Data Highlighter Signals Are Equivalent
Google AdSense Ad Balance Tool Officially Back For Good- Google Ads Overview Page Filters & Bidding Maximize Conversion Value
Google Reverts Zero Search Results After Search Community Feedback
Google launches new Rich Results testing tool with some rebranding
