--- a/RelaxNG/publidoc.rnc	lun. juil. 30 23:23:57 2012 +0200
+++ b/RelaxNG/publidoc.rnc	jeu. août 02 17:16:36 2012 +0200
@@ -26,7 +26,7 @@
 top.head = element head { top.head.content }
 
 top.head.content =
-   (title, subtitle?)?
+   (title, shorttitle?, subtitle?)?
  & identifier*
  & copyright?
  & contributors?
@@ -87,7 +87,7 @@
 division.head = element head { division.head.content }
 
 division.head.content =
-   (title, subtitle?)?
+   (title, shorttitle?, subtitle?)?
  & abstract?
  & annotation*
 
@@ -101,7 +101,7 @@
 component.head = element head { component.head.content }
 
 component.head.content =
-   (title, subtitle?)?
+   (title, shorttitle?, subtitle?)?
  & contributors?
  & abstract?
  & annotation*
@@ -143,7 +143,7 @@
 section.head = element head { section.head.content }
 
 section.head.content =
-   (title, subtitle?)?
+   (title, shorttitle?, subtitle?)?
  & abstract?
  & audio*
  & annotation*
@@ -162,7 +162,7 @@
 block.head = element head { block.head.content }
 
 block.head.content =
-   (title, subtitle?)?
+   (title, shorttitle?, subtitle?)?
 
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ p ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -383,9 +383,10 @@
 #                                 HEAD LEVEL
 # =============================================================================
 
-# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ title, subtitle ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# ~~~~~~~~~~~~~~~~~~~~~~~ title, shorttitle, subtitle ~~~~~~~~~~~~~~~~~~~~~~~~~
 
 title = element title { title.content }
+shorttitle = element shorttitle { title.content }
 subtitle = element subtitle { title.content }
 
 title.content = inlines