Really Simple Syndication (RSS) is a family of formats that describe
feeds, specially constructed XML documents that allow an interested
person to subscribe and receive updates from a particular web
service. This portion of the standard library provides tooling to read
and create these feeds.

The standard library supports RSS 0.91, 1.0, 2.0, and Atom, a related
format. Here are some links to the standards documents for these
formats:
