+
+/* Read grammar specifications. */
+extern FILE *finput;
+
+/* Output all the action code; precise form depends on which parser. */
+extern struct obstack action_obstack;
+
+/* Output the tables and the parser and also contains all the %{
+ ... %} definitions. */
+extern struct obstack table_obstack;
+
+/* optionally output #define's for token numbers. */
+extern struct obstack defines_obstack;
+
+/* If semantic parser, output a .h file that defines YYSTYPE... */
+extern struct obstack attrs_obstack;
+
+/* ... and output yyguard, containing all the guard code. */
+extern struct obstack guard_obstack;
+
+/* The verbose output. */
+extern struct obstack output_obstack;
+
+/* The VCG graph output. */
+extern struct obstack graph_obstack;
+