Ok, thank you for the idea.
I tested it, but for the moment it doesn’t work (I saw many complaints in the support section, because it doesn’t work with the last WordPress version).
Moreover I’m not sure that’s the right approach, because I want that an article can’t be seen in a blog page but it’s showed in another.
i.e.: I don’t want that the actually “PROVA” article is shown in the NEWS section (blog model) because I want that the same article is shown in the “HALL OF FAME” section (always blog model).
I saw that in the page defining the blog model, there is a Blog Page Meta section, in which I can select the category I want to be showed (All/cat 1/cat 2/…). How can I add a similar selector for an “Excluding” category? Can you address me on where I have to work in the theme functions to achieve my needs?
Thank you indeed.
F.