If some of the unicode symbols aren't displaying for you and you're on a debian-based distro, I followed the advice from https://en.wikipedia.org/wiki/Help:Spec

If some of the unicode symbols aren't displaying for you and you're on a debian-based distro, I followed the advice from https://en.wikipedia.org/wiki/Help:Special_characters https://en.wikipedia.org/wiki/Help:Special_characters and ran sudo apt-get install ttf-ancient-fonts and they display now after a full browser restart.