>> You don't need to call fl_font() before setting titles and labels, so
>> why is it needed before fl_draw()? Can't the same font be used?

   Oh, and with titles, FLTK isn't used; the window manager handles titles.

   With labels, widgets have a default font, so when the label is drawn,
   the widget's default font is used.

   But when using direct-drawing functions, there's no concept of a
   'default font', since font initialization is potentially very slow.

   One could argue fl_draw() should call fl_font() if no font was set,
   to avoid problems. Probably should be discussed, though I think this
   has come up before.. can't recall the reason it wasn't changed.
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