--- a/RelaxNG/publidoc.rnc	mer. juil. 20 22:57:09 2011 +0200
+++ b/RelaxNG/publidoc.rnc	mar. sept. 13 10:24:30 2011 +0200
@@ -83,10 +83,12 @@
    (title, subtitle?)?
  & language?
  & author*
+ & abstract?
  & annotation*
 section.head.content =
    (title, subtitle?)?
  & language?
+ & abstract?
  & annotation*
 block.head.content =
    (title, subtitle?)?