Just a tiny update to my FVWM setup. I had problems with maximization
of windows. The problem was in stalonetray and not in the FVWM itself.
I set the .slalonerayrc parameter "window_strut none" so the
stalonetray window is now a normal window and does not prevent the FVWM
from it's work.
I still not decide if I want to use Alt+F1 as the 4Dwm does (it's a
shortcut to raise a window) or to used it as it is no my "normal" FVWM
setup (to open the applications menu).