RMarkdown really is great. I used RStudio/RMarkdown for almost all my homeworks, projects, and even papers with no code during my MS program. I now realize that it was Pandoc's Markdown mixed with LaTeX that I appreciated so much for scientific writing, but with RMarkdown you can easily call R and Julia.

I don't remember invoking Python from RMarkdowm (maybe you already could in RStudio but I never did), so this will be a welcome addition in this new Posit program.