While presenting using a projector, is it possible to have the laptop screen showing all the open windows (including my presentation notes) and the projector showing only those windows I want the audience to see (a pdf file, a document)?
Is there a way to "duplicate" a window on both screens while keeping other windows showing only on the main screen?
This would permit me to switch between windows while presenting without exposing my notes, etc. to the audience.
I use mostly Gnome as my preferred desktop environment but use XFCE occasionally. However, I'm willing to test out other DEs if need be.