Re: Section number increments

[Karl Berry]

    @unnumbered 
    @unnumbered
    @chapter

This is normal (and works fine, as far as I know).  Most manuals have an
@unnumbered or two at the beginning and end.

    @section
    @unnumberedsubsec
    @unnumberedsubsec
    @chapter

I have never seen a real manual do this, nor would I want to recommend
it.  If you just want "headings" within a section, then it seems like
@subsubheading would be the right thing.