You can write comments in a Texinfo file that will not appear in
either the Info file or the printed manual by using the
@comment command (which may be abbreviated to @c).
Such comments are for the person who reads the Texinfo file. All the
text on a line that follows either @comment or @c is a
comment; the rest of the line does not appear in either the Info file
or the printed manual. (Often, you can write the @comment or
@c in the middle of a line, and only the text that follows after
the @comment or @c command does not appear; but some
commands, such as @settitle and @setfilename, work on a
whole line. You cannot use @comment or @c in a line
beginning with such a command.)
You can write long stretches of text that will not appear in either
the Info file or the printed manual by using the @ignore and
@end ignore commands. Write each of these commands on a line
of its own, starting each command at the beginning of the line. Text
between these two commands does not appear in the processed output.
You can use @ignore and @end ignore for writing
comments. Often, @ignore and @end ignore is used
to enclose a part of the copying permissions that applies to the
Texinfo source file of a document, but not to the Info or printed
version of the document.