The Web Platform Working Group has published an updated Working Draft of HTML 5.1. In this version of the 5th major version of the Hypertext Markup Language (HTML), the core language of the World Wide Web, new features continue to be introduced to help Web application authors, new elements continue to be introduced based on research into prevailing authoring practices, and special attention continues to be given to defining clear conformance criteria for user agents in an effort to improve interoperability.

Please, read more about the group’s plans to establish a regular rhythm of publication and how the group is working toward an HTML 5.1 Recommendation later this year.

The Web Platform Working Group invites implementation of the Candidate Recommendation of WebIDL Level 1. This document defines an interface definition language, Web IDL, that can be used to describe interfaces that are intended to be implemented in web browsers. Web IDL is an IDL variant with a number of features that allow the behavior of common script objects in the web platform to be specified more readily. How interfaces described with Web IDL correspond to constructs within ECMAScript execution environments is also detailed in this document. It is expected that this document acts as a guide to implementors of already-published specifications, and that newly published specifications reference this document to ensure conforming implementations of interfaces are interoperable.