+* uuid
+
+ Specifies a globally unique ID for a page. This ID will be used,
+ rather than the page url, in RSS and Atom feeds.
+
+ The uuid can either be a literal uuid (ie,
+ "ec248d04-f347-4eb8-92b6-671b15d36980"), or it can be an alternative URl
+ for the page.
+
+ This is mostly useful when a page's feed has moved, to keep the IDs for
+ pages unchanged and
+ [[avoid_flooding_aggregators|howto_avoid_flooding_aggregators]].
+