However, this latter syntax won't be allowed if the [[htmlscrubber]] is
enabled, since it can be used to insert unsafe content.
+ For both cases, an anchor to jump to inside the destination page may also be
+ specified using the common `PAGE#ANCHOR` syntax.
+
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