> sure, but structured text like markdown is even more useful, since humans can parse and understand it as easily as skills can

And there are a number of nice viewers / editors either already installed or easily installable on most operating systems to view / edit Markdown in a "beautified" fully rendered form, on both CLI and GUI interfaces; and since most (all these days?) LLMs also "understand" Markdown formatting pretty-much natively, you can easily emphasize certain points to add "weight" to them in the LLMs' "mind" / "thinking" (calculation of statistical token probabilities) process. Plaintext without Markdown is just ... well ... plain. :)