An authoring style that has grown popular,
especially among some programmers,
is to write in a format called Markdown,
and then compile the final document.

Compared to word processors like Microsoft Word and LibreOffice Writer,
Markdown authoring stores both content and markup together
in a human-readable tekst file.

HTML is itself a plaintext format,
but is less human-readable.
Similarly the format LaTeX is also plaintext,
but its markdown arguably distracts the reading process
[@Mailund2019chap2, p. 9].

Other human-readable document source formats exists.
FIXME Org-mode.
FIXME AsciiDoc.