An Atom feed action takes a sequence of objects and converts them into Atom feed entries. The objects must implement a protocol consisting of either a single generic word:

>entry ( object -- entry )

Or a series of generic words, called by the default implementation of >entry:

feed-entry-title ( object -- string )

feed-entry-description ( object -- description )

feed-entry-date ( object -- timestamp )

feed-entry-url ( object -- url )