--- a/doc/book/en/annexes/rql/intro.rst	Fri Jun 17 09:37:49 2011 +0200
+++ b/doc/book/en/annexes/rql/intro.rst	Thu Jun 16 12:31:27 2011 +0200
@@ -159,3 +159,4 @@
 .. _Datalog: http://en.wikipedia.org/wiki/Datalog
 .. _intensional: http://en.wikipedia.org/wiki/Intensional_definition
 .. _extensional: http://en.wikipedia.org/wiki/Extension_(predicate_logic)
+