Assertion: b head | /r/UsedFor | subsection
Facets:
value: within level 2 sections
type: LOCATION
Source sentences:
text: Major (or level 1) headers are for chapter titles and appendices, as well as for sections in the front matter; a-heads (level 2 headings) are for major subdivisions of a chapter or appendix; b-heads (level 3 headings) are for subsections within level 2 sections, and so on.