http://www.rfc-editor.org/rfc/rfc5005.txt
RFC 5005: Feed Paging and Archiving, M. Nottingham2007-09-01T23:00:00-00:00This specification defines three types of syndicated Web feeds that enable publication of entries across one or more feed documents. This includes "paged" feeds for piecemeal access, "archived" feeds that allow reconstruction of the feed's contents, and feeds that are explicitly "complete". [STANDARDS-TRACK]