I don't think the window itself has that flag/option => but maybe its added by anchordockig?
No, it will be done (on unix) by the WM. See attached.
Updated: If Curt's talking about Windows, I think I remember that it had a way that an application program could add things to the system button. Could an IDE extension package add a "keep on top" facility?
Apologies for a fairly large screenshot, but KDE didn't want to action the PrintScreen key if the menus were already displayed.
MarkMLl