--- a/doc/book/en/A02b-components.en.txt	Tue May 05 17:18:49 2009 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,81 +0,0 @@
-.. -*- coding: utf-8 -*-
-
-.. _cubes:
-
-Cubes
------
-
-Standard library
-~~~~~~~~~~~~~~~~
-
-A library of standard cubes are available from `CubicWeb Forge`_
-Cubes provide entities and views.
-
-The available application entities are:
-
-* addressbook: PhoneNumber and PostalAddress
-
-* basket: Basket (like a shopping cart)
-
-* blog: Blog (a *very* basic blog)
-
-* classfolder: Folder (to organize things but grouping them in folders)
-
-* classtags: Tag (to tag anything)
-
-* file: File (to allow users to upload and store binary or text files)
-
-* link: Link (to collect links to web resources)
-
-* mailinglist: MailingList (to reference a mailing-list and the URLs
-  for its archives and its admin interface)
-
-* person: Person (easily mixed with addressbook)
-
-* task: Task (something to be done between start and stop date)
-
-* zone: Zone (to define places within larger places, for example a
-  city in a state in a country)
-
-The available system entities are:
-
-* comment: Comment (to attach comment threads to entities)
-
-
-Adding comments to BlogDemo
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-To import a cube in your application just change the line in the
-``__pkginfo__.py`` file and verify that the cube you are planning
-to use is listed by the command ``cubicweb-ctl list``.
-For example::
-
-    __use__ = ('comment',)
-
-will make the ``Comment`` entity available in your ``BlogDemo``
-application.
-
-Change the schema to add a relationship between ``BlogEntry`` and
-``Comment`` and you are done. Since the comment cube defines the
-``comments`` relationship, adding the line::
-
-    comments = ObjectRelation('Comment', cardinality='1*', composite='object')
-
-to the definition of a ``BlogEntry`` will be enough.
-
-Synchronize the data model
-~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Once you modified your data model, you need to synchronize the
-database with your model. For this purpose, `CubicWeb` provides
-a very useful command ``cubicweb-ctl shell blogdemo`` which
-launches an interactive migration Python shell. (see 
-:ref:`cubicweb-ctl` for more details))
-As you modified a relation from the `BlogEntry` schema,
-run the following command:
-::
-
-  synchronize_rschema('BlogEntry')
-  
-You can now start your application and add comments to each 
-`BlogEntry`.