Does this help..
From
https://manual.calibre-ebook.com/conversion.html
Quote:
Formatting style: Markdown
calibre also supports running TXT input though a transformation preprocessor known as Markdown. Markdown allows for basic formatting to be added to TXT documents, such as bold, italics, section headings, tables, lists, a Table of Contents, etc. Marking chapter headings with a leading # and setting the chapter XPath detection expression to “//h:h1” is the easiest way to have a proper table of contents generated from a TXT document. You can learn more about the Markdown syntax at daringfireball.
|
Sent from my Pixel 7a using Tapatalk