This page summarizes the relationships among specifications, whether they are finished standards or drafts. Below, each title links to the most recent version of a document.
W3C Recommendations have been reviewed by W3C Members, by software developers, and by other W3C groups and interested parties, and are endorsed by the Director as Web Standards. Learn more about the W3C Recommendation Track.
Group Notes are not standards and do not have the same level of W3C endorsement.
PICS has been superseded by POWDER . Like PICS, POWDER encodes descriptions that can be applied to single resources or defined groups. Unlike PICS, the descriptions themselves are encoded in RDF . Developers of ratings services are advised to encode their descriptive vocabularies in RDF, taking note of Best Practice Recipes for Publishing RDF Vocabularies.
These specifications have either been superseded by others, or have been abandoned. They remain available for archival purposes, but are not intended to be used.