The current wording in the manual is:
Include one blank line above the heading, and optionally one blank line below it
AWB added a blank line above the heading.
rev 12133 FixHeadings: if a sub-heading directly after a heading don't add blank line before sub-heading
This corrects the standard cases.
There could be some exceptions out there, like wiki comment and no other content added between heading and sub-heading or something, where AWB might not detect the "heading then sub-heading" scenario and still want to add a blank line before the sub-heading. We'll deal with that if and when such issues are found.
For the record, commit 12133:
- "For T141346: FixHeadings: if a sub-heading directly after a heading don't add blank line before sub-heading"