Some Standards about CMS

Standards(reposted from OSCOM)
WebDAV
WebDAV stands for "Web-based Distributed Authoring and Versioning". It is a set of extensions to the HTTP protocol which allows users to collaboratively edit and manage files on remote web servers.
RSS
RSS is a Web content syndication format.
ATOM
Atom is an XML-based file format intended to allow lists of information, known as "feeds", to be synchronised between publishers and consumers. Feeds are composed of a number of items, known as "entries", each with an extensible set of attached metadata. The primary use case that Atom addresses is for syndicating Web content such as Weblogs and news headlines to other Web sites and directly to consumers.
JSR-170
The API should be a standard, implementation independent, way to access content bi-directionally on a granular level within a content repository. A Content Repository is a high-level information management system that is a superset of traditional data repositories. A content repository implements "content services" such as: author based versioning, full textual searching, fine grained access control, content categorization and content event monitoring. It is these "content services" that differentiate a Content Repository from a Data Repository