@chapheading: Chapter-level Headings
@chapheading commands produce
chapter-like headings in the body of a document.
However, neither command produces an entry in the table of contents, and neither command causes TeX to start a new page in a printed manual.
In TeX, a
@majorheading command generates a larger vertical
whitespace before the heading than a
@chapheading command but
is otherwise the same.
In Info and plain text, the
@chapheading commands produce the same output as
@chapter: the title is printed on a line by itself with a line
of asterisks underneath. Similarly for HTML. The only difference is
the lack of numbering and the lack of any association with nodes.