[xwiki-users] Autosave on by default, is it configurable?

Hi, all! Is there a solution to turn ON Autosave box by default in Wiki mode of the editor? From http://platform.xwiki.org/xwiki/bin/view/DevGuide/Autosave I didn't get much how to configure this :-( Is it possible to configure it once on ALL subwikis? Kind regards, Dmitry