I have just switched to writing in LaTeX from markdown. I like to proofread by hand, and so in the past I used a template that increased the line spacing and changed the typeface to something monospaced just for proofreading. Now I cannot figure out how to change an entire document to being monospaced.
I found several solutions that seem to only work on LuaLaTeX, but I would prefer to use pdfLaTeX.
ttfontandtypewriterandmonospace. For example, look here: tex.stackexchange.com/questions/70758/…msoption (example) to change even the chapters and secton titles.