That's something i want too, but it's not that trivial. And that's why Sputnik or Ibrowse & co are superior in that regard (sputnik gained many layout/flicker issues doing so, though
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Also, consider having system gadgets would mean no unicode support (that might change though) and css styles wouldn't be applied to them (although with additional work one could derivate the mui gadget and adopt the css style).
