org: Headings and sectioning structure
12.11.3 Headings and sectioning structure
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‘texinfo’ uses a pre-defined scheme, or class, to convert headlines into
Texinfo structuring commands. For example, a top level headline appears
as ‘@chapter’ if it should be numbered or as ‘@unnumbered’ otherwise.
If you need to use a different set of commands, e.g., to start with
‘@part’ instead of ‘@chapter’, install a new class in
‘org-texinfo-classes’, then activate it with ‘#+TEXINFO_CLASS’ keyword.
Export process defaults to ‘org-texinfo-default-class’ when there is no
such keyword in the document.
If a headline’s level has no associated structuring command, or is
below a certain threshold 
Export settings, that headline becomes
a list in Texinfo output.
As an exception, a headline with a non-nil ‘:APPENDIX:’ property
becomes an appendix, independently on its level and the class used.
Each regular sectioning structure creates a menu entry, named after
the heading. You can provide a different, e.g., shorter, title in
‘:ALT_TITLE:’ property (Table of contents). Optionally, you can
specify a description for the item in ‘:DESCRIPTION:’ property. E.g.,
* Controlling Screen Display
:PROPERTIES:
:ALT_TITLE: Display
:DESCRIPTION: Controlling Screen Display
:END:
Info Catalog
org: Document preamble
org: Texinfo export
org: Indices