A bit off topic but some might be interested... Adobe have released the PostScript interpreter source code as open source. Press release here https://www.globenewswire.com/news-release/2022/12/01/2566212/28639/en/Compu... and a blog post with the background to PostScript here https://computerhistory.org/blog/postscript-a-digital-printing-press/ Regards, — Bruce Horrocks Hampshire, UK