* http://symfony.com/
  * http://symfony.com/pdf/Symfony_book_2.3.pdf
  * http://symfony.com/doc/current/reference/index.html
  * YAML: [[http://symfony.com/doc/master/components/yaml/yaml_format.html]] [[http://symfony.com/legacy/doc/reference/1_4/en/02-YAML|...1.4]] 
  * CMF: [[http://symfony.com/doc/master/cmf/index.html]] (ContentManagementFramework)
  * http://knpbundles.com/
  * twig: [[http://twig.sensiolabs.org/]]