very obvious now, but I banged my head for hours

diff --git a/doc/ikiwiki/directive/meta.mdwn b/doc/ikiwiki/directive/meta.mdwn
index 1f5bde964d088a31c430377ab44dd94ff60f752c..d66e26fc4e493574a9158f57a49b504beba07021 100644 (file)
--- a/doc/ikiwiki/directive/meta.mdwn
+++ b/doc/ikiwiki/directive/meta.mdwn
@@ -7,7 +7,8 @@ Enter the metadata as follows:
        \[[!meta field="value" param="value" param="value"]]
 
 The first form sets a given field to a given value, while the second form
-also specifies some additional sub-parameters.
+also specifies some additional sub-parameters. You can have only one field
+per `meta` directive, use more directives if you want to specify more fields.
 
 The field values are treated as HTML entity-escaped text, so you can include
 a quote in the text by writing `"` and so on.