`@unnumberedsec', `@appendixsec', `@heading'
============================================

  The `@unnumberedsec', `@appendixsec', and `@heading' commands are,
respectively, the unnumbered, appendix-like, and heading-like
equivalents of the `@section' command.  (See `@section': section.)

`@unnumberedsec'
     The `@unnumberedsec' command may be used within an unnumbered
     chapter or within a regular chapter or appendix to provide an
     unnumbered section.

`@appendixsec'
`@appendixsection'
     `@appendixsection' is a longer spelling of the `@appendixsec'
     command; the two are synonymous.

     Conventionally, the `@appendixsec' or `@appendixsection' command
     is used only within appendices.

`@heading'
     You may use the `@heading' command anywhere you wish for a
     section-style heading that will not appear in the table of
     contents.