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diff --git a/synfig-core/src/synfig/uniqueid.cpp b/synfig-core/src/synfig/uniqueid.cpp
new file mode 100644
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--- /dev/null
+++ b/synfig-core/src/synfig/uniqueid.cpp
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+/* === S Y N F I G ========================================================= */
+/*!	\file uniqueid.cpp
+**	\brief Template File
+**
+**	$Id$
+**
+**	\legal
+**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+**	This package is free software; you can redistribute it and/or
+**	modify it under the terms of the GNU General Public License as
+**	published by the Free Software Foundation; either version 2 of
+**	the License, or (at your option) any later version.
+**
+**	This package is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+**	General Public License for more details.
+**	\endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+#	include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+#	include <config.h>
+#endif
+
+#include "uniqueid.h"
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace std;
+using namespace synfig;
+
+/* === G L O B A L S ======================================================= */
+
+static int uniqueid_pool_(0);
+
+/* === M E T H O D S ======================================================= */
+
+int
+synfig::UniqueID::next_id()
+{
+	return ++uniqueid_pool_;
+}