Outline of a Bison Grammar
==========================

   A Bison grammar file has four main sections, shown here with the
appropriate delimiters:

     %{
     C DECLARATIONS
     %}
     
     BISON DECLARATIONS
     
     %%
     GRAMMAR RULES
     %%
     
     ADDITIONAL C CODE

   Comments enclosed in `/* ... */' may appear in any of the sections.

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C Declarations

Syntax and usage of the C declarations section.

Bison Declarations

Syntax and usage of the Bison declarations section.

Grammar Rules

Syntax and usage of the grammar rules section.

C Code

Syntax and usage of the additional C code section.