texinfo: @section

Chapter Structuring

@unnumberedsec @appendixsec @heading

@majorheading @chapheading

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5.6 '@section': Sections Below Chapters
=======================================

An '@section' command identifies a section within a chapter unit,
whether created with '@chapter', '@unnumbered', or '@appendix',
following the numbering scheme of the chapter-level command.  Thus,
within an '@chapter' chapter numbered '1', the sections are numbered
'1.1', '1.2', etc.; within an '@appendix' "chapter" labeled 'A', the
sections are numbered 'A.1', 'A.2', etc.; within an '@unnumbered'
chapter, the section gets no number.  The output is underlined with '='
in Info and plain text.

  To make a section, write the '@section' command at the beginning of a
line and follow it on the same line by the section title.  For example,

     @section This is a section

might produce the following in Info:

     5.7 This is a section
     =====================

  Section titles are listed in the table of contents.

  The TeX, HTML, Docbook, and XML output is all analogous to the
chapter-level output, just "one level down"; Note: @chapter.