Yeah but PDF itself isn’t really the problem. Bookdown is nice, but if you’re using Bookdown then you’re using RMarkdown, so you can easily output the same .Rmd file as HTML/PDF/Reveal.js/EPub/etc. I’m trying to find well-executed examples or templates for what I have in mind (two column layout of code/text, maybe in landscape orientation for better spacing), but I’m drawing up blanks so far. Specifically I’m looking for either LaTeX or Reveal.js packages/templates for this.