Good point, https://en.wikibooks.org/wiki/LaTeX/Document_Structure#Sectioning_commands https://en.wikibooks.org/wiki/LaTeX/Document_Structure#Secti... wikibooks

Good point, https://en.wikibooks.org/wiki/LaTeX/Document_Structure#Sectioning_commands https://en.wikibooks.org/wiki/LaTeX/Document_Structure#Secti... wikibooks latex guide suggests \chapter is level 0, which gives "=" (1 equals sign), But then surely the h1 document title should be above that, which would be "=" (1), so a chapter is below at "==" (2)? \part apparently is -1 in latex, which would be seem to be odd. But document title isn't part of the latex sectioning hierarchy... Given that there is a document title, part and chapter, chapter could maybe "===" (3) or maybe "==" (2) if we're not using parts or we don't consider the document title. I think anyway? It's unfortunate that the creators of latex did not follow the HTML heading rules better. (despite latex pre-dating html of course) :-)