--- /dev/null
+/********************* */
+/*! \file clause_id.h
+ ** \verbatim
+ ** Original author: Tim King
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2016 New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Definition of ClauseId
+ **
+ ** A ClauseId is a shared identifier between the proofs module and the sat
+ ** solver for a clause.
+ **/
+
+#include "cvc4_private.h"
+
+#ifndef __CVC4__PROOF__CLAUSE_ID_H
+#define __CVC4__PROOF__CLAUSE_ID_H
+
+namespace CVC4 {
+
+/**
+ * A ClauseId is a shared identifier between the proofs module and the sat
+ * solver for a clause.
+ */
+typedef unsigned ClauseId;
+
+}/* CVC4 namespace */
+
+#endif /* __CVC4__PROOF__CLAUSE_ID_H */