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diff --git a/engines/glk/jacl/jacl.h b/engines/glk/jacl/jacl.h
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+++ b/engines/glk/jacl/jacl.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.
+ *
+ */
+
+#ifndef JACL_JACL
+#define JACL_JACL
+
+#include "glk/glk_api.h"
+
+namespace Glk {
+namespace JACL {
+
+/**
+ * JACL game interpreter
+ */
+class JACL : public GlkAPI {
+private:
+	int _saveSlot;
+private:
+	/**
+	 * Engine initialization
+	 */
+	bool initialize();
+
+	/**
+	 * Engine cleanup
+	 */
+	void deinitialize();
+public:
+	/**
+	 * Constructor
+	 */
+	JACL(OSystem *syst, const GlkGameDescription &gameDesc);
+
+	/**
+	 * Run the game
+	 */
+	virtual void runGame() override;
+
+	/**
+	 * Returns the running interpreter type
+	 */
+	virtual InterpreterType getInterpreterType() const override {
+		return INTERPRETER_JACL;
+	}
+
+	/**
+	 * Savegames aren't supported for JACL games
+	 */
+	virtual Common::Error readSaveData(Common::SeekableReadStream *rs) override;
+
+	/**
+	 * Savegames aren't supported for JACL games
+	 */
+	virtual Common::Error writeGameData(Common::WriteStream *ws) override;
+
+	/**
+	 * Returns true if a savegame is being loaded directly from the ScummVM launcher
+	 */
+	bool loadingSavegame() const { return _saveSlot != -1; }
+};
+
+extern JACL *g_vm;
+
+} // End of namespace JACL
+} // End of namespace Glk
+
+#endif