With all the @ symbols, it reminds me a lot of Lout.
Unfortunately, Lout never really took off, but I have fond memories of it. I liked it more than LaTeX, too.
[0]: https://wiki.archlinux.org/title/Lout
same, I used to use it to add PDF generation to my small projects because it was really easy to synthesise and output lout
That is something I accidentally discovered. TexInfo also uses @.
same, I used to use it to add PDF generation to my small projects because it was really easy to synthesise and output lout