The Web Performance Working Group invites implementations of User Timing Level 2 Candidate Recommendation. This specification defines an interface to help web developers measure the performance of their applications by giving them access to high precision timestamps.

A wide review Working Draft of Accessibility Conformance Testing (ACT) Rules Format was published today by the Accessibility Guidelines Working Group (AG WG). This draft addresses all comments received on the previous drafts. Most importantly, “Composed Rules” was introduced, in addition to “Atomic Rules”, to replace “Rule Groups”. This draft is accompanied by sample ACT Rules that implement this rules format. Read about the the Web Accessibility Initiative (WAI).

The Accessible Platform Architectures Working Group has published a Working Draft of a revision to Inaccessibility of CAPTCHA. Since the last publication, the abilities of robots to defeat CAPTCHAs has increased, and new technologies to authenticate human users have come available. This update brings the document up to date with these new realities. For more information, see the blog post Updated and extensively revised “Inaccessibility of CAPTCHA” Published. Read about the Accessible Platform Architectures Working Group and the Web Accessibility Initiative (WAI).

The Web Real-Time Communications Working Group invites implementations of Identifiers for WebRTC’s Statistics API Candidate Recommendation. This document defines a set of WebIDL objects that allow access to the statistical information about a RTCPeerConnection. These objects are returned from the getStats API that is specified in [WEBRTC].

The CSS Working Group invites implementations of an updated Candidate Recommendation of CSS Text Decoration Module Level 3. This module contains the features of CSS relating to text decoration, such as underlines, text shadows, and emphasis marks.

CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc.

The Web Real-Time Communications Working Group has published two First Public Working Drafts:

• WebRTC DSCP Control API: This API defines a control surface for manipulating the network control bits (DSCP bits) of outgoing WebRTC packets.
• MediaStreamTrack Content Hints: This specification extends MediaStreamTrack to provide a media-content hint attribute. This optional hint permits MediaStreamTrack consumers such as PeerConnection (defined in [ webrtc ]) or MediaRecorder (defined in [ mediastream-recording ]) to encode or process track media with methods more appropriate to the type of content that is being consumed. Adding a media-content hint provides a way for a web application to help track consumers make more informed decision of what encoder parameters and processing algorithms to use on the consumed content.