add note to consider tagbase when trying to match tagged pages

diff --git a/doc/ikiwiki/directive/tag.mdwn b/doc/ikiwiki/directive/tag.mdwn
index 267aee660d52d0c53f68aeb1cf63cbc2379c753a..64736f8cddfd0ec31ad05231a19f01e7df28dfc6 100644 (file)
--- a/doc/ikiwiki/directive/tag.mdwn
+++ b/doc/ikiwiki/directive/tag.mdwn
@@ -21,6 +21,10 @@ located under a base directory, such as "tags/". This is a useful way to
 avoid having to write the full path to tags, if you want to keep them
 grouped together out of the way.
 
+Bear in mind that specifying a tagbase means you will need to incorporate it
+into the `link()` [[ikiwiki/PageSpec]] you use: e.g., if your tagbase is
+`tag`, you would match pages tagged "foo" with `link(tag/foo)`.
+
 If you want to override the tagbase for a particular tag, you can use
 something like this: