X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/8271e9641e2f2bce9060cecd9a3421e2a4f98f24..85a5ff82c61abfbc450934f00ef53840ce6943d2:/doc/plugins/meta.mdwn

diff --git a/doc/plugins/meta.mdwn b/doc/plugins/meta.mdwn
index c3f971d06..12240422d 100644
--- a/doc/plugins/meta.mdwn
+++ b/doc/plugins/meta.mdwn
@@ -123,6 +123,19 @@ Supported fields:
   contents. In particular, it does not check the values against the set of
   valid values but serves whatever you pass it.
 
+* guid
+
+  Specifies a globally unique ID for a page. This guid will be used,
+  rather than the page url, to identify the page in RSS and Atom feeds.
+
+  The guid can either be a 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 guids for
+  pages unchanged and
+  [[avoid_flooding_aggregators|howto_avoid_flooding_aggregators]].
+
 If the field is not one of the above predefined fields, the metadata will be
 written to the generated html page as a <meta> header. However, this
 won't be allowed if the [[htmlscrubber]] is enabled, since it can be used to