The doclet should use <section> elements around logical sections beginning with a heading (<h1>...<h6>)

See the discussion and guidelines here:

https://www.w3.org/TR/html5/sections.html#headings-and-sections

Sections may contain headings of a rank equal to their section nesting level. Authors should use headings of the appropriate rank for the section’s nesting level.

Authors are also encouraged to explicitly wrap sections in elements of sectioning content, instead of relying on the implicit sections generated by having multiple headings in one element of sectioning content.