That's a closed source for pay gui built on html and css. It probably would not be too difficult to hook into FLTK's label drawing, but this is a general comme

That's a closed source for pay gui built on html and css. It probably would not be too difficult to hook into FLTK's label drawing, but this is a general comment about typical small to medium sized guis, originally as a reply to someone needing an internal tool built around an openGL window. Maybe it would be better to make a top level comment and mention that the game engine isn't accessible to blind users.