Say there're 3 frames
Then I closed
Fc, Emacs needs to remember nothing;
Fb is the one that needs to be saved its parameters, because it's the only frame on the desktop.
Then I close
Fb is the last closed frame and there's no frame on the desktop.
Next time I create a new frame
Fd, it will use the size and position parameters of
When there're already other frame(s) on the desktop, the newly created frame uses default parameters instead.
Any way to implement that?