Index: trunk/docs/services/zcfg-reference.rst
===================================================================
--- trunk/docs/services/zcfg-reference.rst	(revision 791)
+++ trunk/docs/services/zcfg-reference.rst	(revision 792)
@@ -17,6 +17,10 @@
 .. warning:: The ZOO-Service configuration file is case sensitive.
 
-.. note:: There are many example ZCFG files in the ``cgi-env`` directory of the `ZOO-Project svn <http://zoo-project.org/trac/browser/trunk/zoo-project/zoo-services>`__.
-
+.. note:: There are many example ZCFG files in the ``cgi-env``
+	  directory of the `ZOO-Project svn
+	  <http://zoo-project.org/trac/browser/trunk/zoo-project/zoo-services>`__.
+
+.. note:: A ZCFG file can be converted to the YAML syntaxe by using
+	  the zcfg2yaml command line tool.
 
 Main section
@@ -116,5 +120,12 @@
  * :ref:`ComplexData <ComplexData>`
 
- .. warning:: Every *BoundingBoxData* and *ComplexData* must have at least one ``<Default>`` node (even empty like ``<Default />``)
+ .. warning:: Every *BoundingBoxData* and *ComplexData* must have at
+	      least one ``<Default>`` node (even empty like ``<Default
+	      />``)
+
+ .. warning:: In WPS 2.0.0 version, it is possible to define nested
+	      inputs and outputs. So, from revision `790
+	      <http://www.zoo-project.org/trac/changeset/790>`__, you
+	      are allowed to use a new input/output definition here.
 
 .. _LiteralData: