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(* $Id$ *)

(*i*)
open Coqast
open Ast
open Pcoq
open Extend
(*i*)

type frozen_t

val freeze : unit -> frozen_t
val unfreeze : frozen_t -> unit
val init : unit -> unit

val extend_grammar : grammar_command -> unit

val remove_rule : (string * gram_universe) -> typed_entry -> grammar_rule ->
  unit
val remove_entry : (string * gram_universe) -> grammar_entry -> unit
val remove_grammar : grammar_command -> unit