--- a/RelaxNG/publidoc.rnc	lun. mars 11 14:54:12 2013 +0100
+++ b/RelaxNG/publidoc.rnc	lun. mars 11 18:43:26 2013 +0100
@@ -164,6 +164,8 @@
 
 section.head.content =
    (title, shorttitle?, subtitle?)?
+ & keywordset?
+ & subjectset?
  & abstract?
  & audio*
  & annotation*