After creating the header for a Texinfo file, the Texinfo back-end automatically generates a name and destination path for the Info file. To override this default with a more sensible path and name, specify the ‘TEXINFO_FILENAME’ keyword.
Along with the output’s file name, the Texinfo header also contains
language details (see Export Settings) and encoding system as set in
the org-texinfo-coding-system variable. Insert ‘TEXINFO_HEADER’
keywords for each additional command in the header, for example:
#+TEXINFO_HEADER: @synindex
Instead of repeatedly installing the same set of commands, define
a class in org-texinfo-classes once, and then activate it in the
document by setting the ‘TEXINFO_CLASS’ keyword to that class.