Maximize window and wallpaper on page 0-3?

I was reading about the powerful feature of FVWM’s virtual desktop… “which allows you to place windows on an area much larger than the actual size of the visible display”. Before starting to create the config, there are a few questions.

  1. Is it possible to maximize the window size to 4 pages (0-3)? If possible, what’s the geometry (Action Maximize ? ?).

  2. Can there be a different wallpaper for each page? Or, best if one image covers the four pages.

An illustrated screenshot of Gimp on virtual pages.