Comment 2 for bug 669102

I will caution that it's not as assistive in accessibility as you might
think. A multitude of signwriters who thought they were doing the right
thing have discovered that *printing* signs in Braille doesn't actually
help.

The Unicode slots are for when you need to write about and educate the
sighted about Braille, but they should not be used where you want to
produce accessible text. A real Braille font will have the correct
patterns in the A-Z Unicode positions etc, not in the Braille Unicode
positions, and will, of course, be used on output devices which deliver
a texture not an image.

Dave