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Lexical and syntactic conventions
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   As `m4' reads its input, it separates it into "tokens".  A token is
either a name, a quoted string, or any single character, that is not a
part of either a name or a string.  Input to `m4' can also contain
comments.

* Menu:

* Names                        Macro names.
* Quoted strings               Quoting input to m4.
* Other tokens                 Other kinds of input tokens.
* Comments                     Comments in m4 input.