Comment 7 for bug 165521

I like the idea that if Inkscape is asked (by a user) to
make a font Bold, it tries Bold, then Demibold, etc.
However, I think that this feature would be genercially
useful, so belongs in a different level of infrastructure. I
would think that in Fontconfig would be the best.

Otherwise, each application would be doing this Bold
substitution in its own, incompatible way.