xfce4 how to escape the full-screen mode

[lina <lina.lastname@gmail.com>]

Hi,

I don't know how to escape/exit the full-screen mode.

In gnome the esc used to work, but now in xfce4 I don't know how to
make it work.

I tried (definitely blindly) any possible keys I could think of.

Thanks ahead for suggestions,