diff -r a33f67e15345 -r 6ed429390935 src/source/packages.rst
--- a/src/source/packages.rst	Thu Apr 12 18:01:15 2018 +0200
+++ b/src/source/packages.rst	Fri Apr 20 16:52:49 2018 +0200
@@ -3,33 +3,46 @@
 PyAMS packages
 ==============
 
+PyAMS core
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   PyAMS ZMI <pyams_zmi/pyams_zmi>
+   PyAMS Content <pyams_content/pyams_content>
+   PyAMS Skin <pyams_skin/pyams_skin>
+   PyAMS Catalog <pyams_catalog/pyams_catalog>
+   PyAMS Form <pyams_form/pyams_form>
+   PyAMS Portal <pyams_portal/pyams_portal>
+   PyAMS Template <pyams_template/pyams_template>
+   PyAMS Pagelet <pyams_pagelet/pyams_pagelet>
+   PyAMS Viewlet <pyams_viewlet/pyams_viewlet>
+   PyAMS Utils <pyams_utils/pyams_utils>
+
+
+PyAMS additional packages
+-------------------------
+
+PyAMS is built on many additional packages, and provides a whole set of extensions. Here is a list of them:
+
 .. toctree::
    :maxdepth: 1
 
    PyAMS Alchemy  <pyams_alchemy/pyams_alchemy>
    PyAMS Cache <pyams_cache/pyams_cache>
-   PyAMS Catalog <pyams_catalog/pyams_catalog>
-   PyAMS Content <pyams_content/pyams_content>
    PyAMS Content_es <pyams_content_es/pyams_content_es>
    PyAMS File <pyams_file/pyams_file>
-   PyAMS Form <pyams_form/pyams_form>
    PyAMS GIS <pyams_gis/pyams_gis>
    PyAMS I18N <pyams_i18n/pyams_i18n>
    PyAMS LDAP <pyams_ldap/pyams_ldap>
    PyAMS Mail <pyams_mail/pyams_mail>
    PyAMS Media <pyams_media/pyams_media>
    PyAMS Notify <pyams_notify/pyams_notify>
-   PyAMS Pagelet <pyams_pagelet/pyams_pagelet>
-   PyAMS Portal <pyams_portal/pyams_portal>
    PyAMS Scheduler <pyams_scheduler/pyams_scheduler>
+   PyAMS Thesaurus <pyams_thesaurus/pyams_thesaurus>
    PyAMS Security <pyams_security/pyams_security>
    PyAMS Sequence <pyams_sequence/pyams_sequence>
-   PyAMS Skin <pyams_skin/pyams_skin>
-   PyAMS Template <pyams_template/pyams_template>
-   PyAMS Thesaurus <pyams_thesaurus/pyams_thesaurus>
-   PyAMS Utils <pyams_utils/pyams_utils>
-   PyAMS Viewlet <pyams_viewlet/pyams_viewlet>
    PyAMS Workflow <pyams_workflow/pyams_workflow>
-   PyAMS ZMI <pyams_zmi/pyams_zmi>
    PyAMS ZMQ <pyams_zmq/pyams_zmq>
    PyAMS ZODBbrowser <pyams_zodbbrowser/pyams_zodbbrowser>