Hello
A few months ago there was a post about a new language that was used to create documents and that language was based on Racket.
The linked post was going on about the need to create a language to handle this task, what current tools (like various notebook-style tools) get wrong and how they can be extended and there was also a "demo" of the language, creating documents for the web. I also distinctly remember the expression "building up a document"... It was definitely closer to an academic writeup.
Does this ring any bells with anyone? I am looking for that link but the obvious searches return a lot of "noise"
All the best