2nd monitor

is there a way to open a new window for a 2nd monitor?
I haven’t found it, I’d like to duplicate the frame to a separate output.

it’s not possible to duplicate the window, but there is a detachable preview panel you can activate under View -> Preview Panel (<Shift+P> by default).

I see it now, thanks.
Maybe someone here in the forum can suggest me a solution: I’m looking for how to project with a beamer just the canvas frame, possibly without any window decoration.