W3C:

2008-04-15: The Mobile Web Initiative Device Description Working Group has published a Group Note of Device Description Repository Core Vocabulary. This document identifies properties that are considered essential for adaptation of content in the Mobile Web. Its intended use is to define a baseline Vocabulary for Device Description Repository (DDR) implementations. The Vocabulary defined in this document is not intended to represent an exhaustive set of properties for content adaptation. DDR Implementations that require additional properties are free to make use of additional vocabularies. The process of creating a new Vocabulary can be modeled on the process described in this document. Learn more about the Mobile Web Initiative Activity. (Permalink)