>>> (1) What is the maximize button and how do I (de-)select it?
>>
>> I guess the "maximize button" is the one which normally shows a single
>> rectangle, and, when the frame is maximized (i.e. the button is
>> "selected"), it shows two rectangles which partially overlap.
>>
> Exactly!
... and how do you (de-)select it? The only way I can do that here is
by clicking that button, neither M-f10 nor f11 do it. And when I click
that button and "the frame is maximized/its maximize button is
selected", my fullscreen frame parameter is nil. Unless we fix that (on
Windows only, I presume), we can't expect desktop or the window-state
functions to save and restore it.
martin