display an image with GD
http://www.symfony-project.org/forum/index.php?t=msg&goto=27853
Send an image to the webbrowser
http://www.symfony-project.org/forum/index.php?t=msg&goto=14687
http://www.symfony-project.org/forum/index.php/t/3417/
ckeditor Image-Dir Path / Settings
http://www.symfony-project.org/forum/index.php?t=msg&goto=17221
documented on: 2007.08.22