Specifies a permanent link to the page, if different than the page
generated by ikiwiki.
+* date
+
+ Specifies the creation date of the page. The date can be entered in
+ nearly any format, since it's parsed by [[cpan TimeDate]].
+
If the field is not treated specially (as the link and title fields are),
the metadata will be written to the generated html page as a <meta>
header.