The W3C Advisory Committee has elected Mark Nottingham (Akamai Technologies) to the W3C Technical Architecture Group (TAG). The mission of the TAG is to build consensus around principles of Web architecture and to interpret and clarify these principles when necessary, to resolve issues involving general Web architecture brought to the TAG, and to help coordinate cross-technology architecture developments inside and outside W3C.

Learn more about the TAG and check out the Extensible Web Summit – Berlin on 11 September.

The HTML Working Group has published two documents today:

• A Working Draft of Encrypted Media Extensions. This proposal extends HTMLMediaElement providing APIs to control playback of protected content. The API supports use cases ranging from simple clear key decryption to high value video (given an appropriate user agent implementation). License/key exchange is controlled by the application. This specification does not define a content protection or Digital Rights Management system. Rather, it defines a common API that may be used to discover, select and interact with such systems as well as with simpler content encryption systems.
• A Working Draft of HTML Canvas 2D Context, Level 2. This specification defines the 2D Context for the HTML canvas element. The 2D Context provides objects, methods, and properties to draw and manipulate graphics on a canvas drawing surface.

Learn more about the HTML Activity.

The Device APIs Working Group has published a Last Call Working Draft of Battery Status API. This specification defines an API that provides information about the battery status of the hosting device. Comments are welcome through 2 October. Learn more about the Ubiquitous Web Applications Activity.

The Linked Data Platform (LDP) Working Group has published a Group Note of Linked Data Platform Best Practices and Guidelines. This document provides best practices and guidelines for implementing Linked Data Platform servers and clients. Learn more about the Data Activity.

The Cascading Style Sheets (CSS) Working Group and the SVG Working Group invite implementation of the Candidate Recommendation of CSS Masking Module Level 1. CSS Masking provides two means for partially or fully hiding portions of visual elements: masking and clipping. Masking describes how to use another graphical element or image as a luminance or alpha mask. Clipping describes the visible region of visual elements. The region can be described by using certain SVG graphics elements or basic shapes. Anything outside of this region is not rendered. CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc. Learn more about the Style Activity and the Graphics Activity.

The Cascading Style Sheets (CSS) Working Group has published a Last Call Working Draft of CSS Counter Styles Level 3. This module introduces the @counter-style rule, which allows authors to define their own custom counter styles for use with CSS list-marker and generated-content counters. It also predefines a set of common counter styles, including the ones present in CSS2 and CSS2.1. Comments are welcome through 23 September. CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc. Learn more about the Style Activity.