--- a/RelaxNG/publidoc.rnc	sam. avril 28 20:12:36 2012 +0200
+++ b/RelaxNG/publidoc.rnc	dim. avril 29 08:39:33 2012 +0200
@@ -373,7 +373,7 @@
    (((firstname, secondname?)?, lastname) | label),
    address?,
    link?,
-   role*
+   role+
 
 # ~~~~~~ firstname, secondname, lastname, label
 firstname = element firstname { firstname.content }