Thanks for your answer.
The point is that I would like to know which files can I access and modify using an editor. For instance, to change the style between the header of the menus, and the submenus... Things are happening, but I don't know where they take place (files).
I create sections within folders, but I don't see the folders anywhere in my site. Even, I don't know which file I am overwriting each time that I make a change in my site (create/modify section, create/modify an exhibit...).
Which files you recommend me to have a look at?
By the way, did you check this?
indexhibit.org/forum/thread/17574/…
That's another reason I would like to know which files I should deal with.
Thak you again,
Lucas