> > > the default for the entire frame, not just for buffer text, is > > > something that requires a higher-quality font. > > > > I didn't know that. > > You didn't know what exactly?
That there was a different font-quality requirement for display in a buffer vs for use as the default font for a frame. > > Why does a frame need a better (default) font than a buffer? > > Just what does a frame require in this regard? > > The bold variant, for starters, because we show the buffer name in > bold on the mode line. Oh, I see what you mean. Is that the only consideration: the fact that a variant (bold or whatever) of the frame font is expected to be able to be used, when you define the default font of a frame?