This link relation is defined in IETF RFC-5005.
Some of the ATOM collections returned by the web service (for example,
search results and change log resources) may be
paged - divided into a series of linked feed
previous link points to the previous
page (the previous feed resource in the series).
The following example shows a change log resource containing a link of this type:
<feed xmlns="http://www.w3.org/2005/Atom"> ... <link rel="self" href="http://host-ip-address/webservice/escenic/changelog/publication/12/before/9425007?count=10"/> <link rel="previous" href="http://host-ip-address/webservice/escenic/changelog/publication/12/after/9425006?count=10"/> <link rel="next" href="http://host-ip-address/webservice/escenic/changelog/publication/12/before/9424970?count=10"/> ... </feed>
Note that many Atom feeds are ordered by date, with the newest entry
first. This means that the
previous page of a
change log will contain links to newer resources,
not older ones.