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From: ams@gnu.org (Alfred M. Szmidt)
Newsgroups: gmane.emacs.devel
Subject: Re: .info files
Date: Thu, 19 Apr 2012 06:44:31 -0400
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   > But that raises the question of files that contain no nodes,
   > specifically no Top node, i.e. output from:
   > 
   > \input texinfo  @c -*-texinfo-*-
   > @setfilename hello-info-world.info
   > @settitle Hello info world
   > @bye

   The only reasonable thing in such files is to show the entire file.

Which it does, with an error though..

   > Though makeinfo should probobly warn/fail if there is no Top node.

   Why should it?  Users should be free to do that if they want to.

It is useful for various reasons to have at least a Top node.