Documentation suggestion

[Ygarr]

To get japanese symbols works (in Arch linux) may help this command:
sudo pacman -S noto-fonts noto-fonts-cjk noto-fonts-emoji ttf-dejavu ttf-liberation ttf-ms-fonts
and
sudo fc-cache -fv
and restart terminal

[akinomyoga]

Are all these fonts needed at the same time? The Japanese characters used by cxxmatrix are only half-width katakana characters, which should be provided as a set in a font. If one font supports any half-width katakana character, all the other half-width katakana characters should also be provided by that font. So I think any one font that includes the half-width katakana characters should be enough. In particular, I doubt noto-fonts-emoji is needed.

Which font does include the half-width katakana characters?