Standards: Three Recommendations From W3C Working Group to Enable Annotations on the Web

From W3C (World Wide Web Consortium) : 
The Web Annotation Working Group has just published a Recommendation for Web Annotation in the form three documents:
Web Annotation Data Model—specification describes a structured model and format, in JSON, to enable annotations to be shared and reused across different hardware and software platforms. Common use cases can be modeled in a manner that is simple and convenient, while at the same time enabling more complex requirements, including li