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diff --git a/engines/sword25/util/lua_persistence.h b/engines/sword25/util/lua_persistence.h
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+/**
+ * This code is heavily based on the Pluto code base. Copyright below
+ */
+
+/* Tamed Pluto - Heavy-duty persistence for Lua
+ * Copyright (C) 2004 by Ben Sunshine-Hill, and released into the public
+ * domain. People making use of this software as part of an application
+ * are politely requested to email the author at sneftel@gmail.com
+ * with a brief description of the application, primarily to satisfy his
+ * curiosity.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Instrumented by Stefan Reich (info@luaos.net)
+ * for Mobile Lua (http://luaos.net/pages/mobile-lua.php)
+ */
+
+#ifndef LUA_PERSISTENCE_H
+#define LUA_PERSISTENCE_H
+
+#include "sword25/util/lua/lua.h"
+
+
+namespace Common {
+class WriteStream;
+class ReadStream;
+}
+
+
+namespace Lua {
+
+#define PERMANENT_TYPE 101
+
+void persistLua(lua_State *luaState, Common::WriteStream *writeStream);
+void unpersistLua(lua_State *luaState, Common::ReadStream *readStream);
+
+} // End of namespace Lua
+
+#endif