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diff --git a/stm/coqworkmgrApi.mli b/stm/coqworkmgrApi.mli
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+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015     *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+(* High level api for clients of the service (like coqtop) *)
+
+(* Connects to a work manager if any. If no worker manager, then
+   -async-proofs-j and -async-proofs-tac-j are used *)
+val init : Flags.priority -> unit
+
+(* blocking *)
+val get : int -> int
+
+(* not blocking *)
+val tryget : int -> int option
+val giveback : int -> unit
+
+(* Low level *)
+type request =
+  | Hello of Flags.priority
+  | Get of int
+  | TryGet of int
+  | GiveBack of int
+  | Ping
+
+type response =
+  | Tokens of int
+  | Noluck
+  | Pong of int * int * int (* cur, max, pid *)
+
+val connect : string -> Unix.file_descr option
+
+exception ParseError
+
+(* Intended to be used with input_line and output_string *)
+val parse_request  : string -> request
+val parse_response : string -> response
+
+val print_request  : request -> string
+val print_response : response -> string