Grammar File

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Bison Grammar Files
*******************

   Bison takes as input a context-free grammar specification and
produces a C-language function that recognizes correct instances of the
grammar.

   The Bison grammar input file conventionally has a name ending in
`.y'.

Grammar Outline: Overall layout of the grammar file.
Symbols: Terminal and nonterminal symbols.
Rules: How to write grammar rules.
Recursion: Writing recursive rules.
Semantics: Semantic values and actions.
Declarations: All kinds of Bison declarations are described here.
Multiple Parsers: Putting more than one Bison parser in one program.

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