@unnumbered command to create a chapter that appears
in a printed manual without chapter numbers of any kind. Use the
@appendix command to create an appendix in a printed manual
that is labelled by letter instead of by number.
For Info file output, the
commands are equivalent to
@chapter: the title is printed on a
line by itself with a line of asterisks underneath. (See section
To create an appendix or an unnumbered chapter, write an
@unnumbered command at the beginning of a
line and follow it on the same line by the title, as you would if you
were creating a chapter.