Hi Christian, This is really interesting to me. I looked up for some examples:
1. Fastcopy, a software with a quite long history, uses the square quotes. The developer is Japanese native. Link: https://fastcopy.jp/img/fc_sample2.png 2. Japanese translation of the Linux From Scratch book also uses the square quotes. Well, this is not user interface, but I guess it also suggests something. Link: https://lfsbookja.github.io/lfsbookja-doc/12.3-ja/chapter04/introduction.html 3. JP-Manpages also uses square quotes. Link: https://ja.manpages.org/dhcp-options/5 As a result, I guess the square quotes are the usual use. However, I find it quite difficult to find user interface examples - seems that the quotes are not often to appear. I glanced at the user interface of vim(1) and the screenshots of several distros, but failed to find such examples. Best wishes, Huihang

