Thanks for the "Tips & Tricks" but in my case it seems to be useless.
I can't manage to show the first info page of the folder in the main area. And filling the empty space is not ok because the design of folder class is not what I need.
I'm looking for a more simple way than changing evreythings.
If you try to use a
{section loop=fetch(content, list, hash( 'parent_node_id', 162,'limit', 1, sort_by, array( array( priority )) ) )} in front of your folder_list, you'll be able to display your first article in a full view.
If you only want this to be valid for node 162, just put it inside a switch/case matching on $node.node_id.
What you need to do for {$module_result.content} is to write an override for your article class and info page, and specify them in override.ini.append. Clear your cache and you should have something to display..
I usually just write a few words in these overrides first, just to check that the correct files are being used.