(This is not an issue per se and I don't know if this information can be useful to the PST as such: sorry for the noise if it is not the case.) Since PST is very involved in accessibility, let me mention the [Luciole typeface](https://www.luciole-vision.com/), developed explicitly for visually impaired people. Another (tiny) connection with PST is that the French TeX User group, [GUTenberg](https://www.gutenberg-asso.fr/): - uses PST for its [French LaTeX FAQ](https://faq.gutenberg-asso.fr/), - has made a modest contribution to making possible the new Luciole extension [Luciole Math](https://www.luciole-vision.com/en/math.html).