The Digital Publishing Interest Group has published a Group Note of Digital Publishing Annotation Use Cases. This document describes the set of use cases generated for Annotation and Social Reading within the W3C Digital Publishing Interest Group, in coordination with the Open Annotation Community Group. Learn more about the Digital Publishing Activity.

The HTML Working Group, with the approval of the Protocols and Formats Working Group, has published a Proposed Recommendation of HTML5 Image Description Extension (longdesc). This extension for HTML5 adds a longdesc attribute that is used to provide links to detailed descriptions of images. Comments are welcome through 16 January. Learn more about the HTML Accessibility Task Force which is a joint task force of the two Working Groups.

The Web Application Security Working Group has published a First Public Working Draft of Requirements for Powerful Features. This specification provides guidelines for user agent implementers and spec authors for implementing features whose properties dictate that they only be exposed to the web within a trustworthy environment. Learn more about the Security Activity.

The System Applications Working Group published two documents today:

• A Working Draft of Task Scheduler API Specification. This specification defines an API to schedule a task at a specified time. When the indicated time is reached, the application that scheduled the task will be notified via a functional event on a service worker. A task event will be delivered to a service worker, regardless of whether the application is active on user agent. Applications such as an alarm clock or an auto-updater may utilize this API to perform certain action at a specified time.
• A Working Draft of TCP and UDP Socket API. This API provides interfaces to raw UDP sockets, TCP Client sockets and TCP Server sockets.

Learn more about the Ubiquitous Web Applications Activity.