W3C term for h1-6 is “headings”: http://www.w3.org/TR/html-markup/h1.html
W3C comparing and contrasting “headings” vs “headers”: http://www.w3.org/TR/html-markup/header.html "The header element typically contains the headings for a section (an h1-h6 element or hgroup element)"
These match the common understanding of the terms also:
- header: anything at the top (often menus, decorative pictures, logo, and other non-text, non-descriptive things)
- heading: text describing what’s underneath, how h1-6 are actually used
Please make this terminology correct as part of the awesome CommonMark effort!