Four Parts Begin a File
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Generally, the beginning of a Texinfo file has four parts:
1. The header, delimited by special comment lines, that includes the
commands for naming the Texinfo file and telling TeX what
definitions file to use when processing the Texinfo file.
2. A short statement of what the file is about, with a copyright
notice and copying permissions. This is enclosed in `@ifinfo' and
`@end ifinfo' commands so that the formatters place it only in the
Info file.
3. A title page and copyright page, with a copyright notice and
copying permissions. This is enclosed between `@titlepage' and
`@end titlepage' commands. The title and copyright page appear
only in the printed manual.
4. The `Top' node that contains a menu for the whole Info file. The
contents of this node appear only in the Info file.
Also, optionally, you may include the copying conditions for a program
and a warranty disclaimer. The copying section will be followed by an
introduction or else by the first chapter of the manual.
Since the copyright notice and copying permissions for the Texinfo
document (in contrast to the copying permissions for a program) are in
parts that appear only in the Info file or only in the printed manual,
this information must be given twice.