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diff --git a/engines/wintermute/debugger/listing.h b/engines/wintermute/debugger/listing.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 LISTING_H_
+#define LISTING_H_
+
+#include "common/array.h"
+
+
+namespace Common {
+
+class String;
+
+}
+
+namespace Wintermute {
+
+struct ListingLine {
+	uint number;
+	Common::String text;
+};
+
+class Listing {
+public:
+	virtual ~Listing() {};
+	/**
+	 * @brief get the listing length (in lines)
+	 */
+	virtual uint getLength() const = 0;
+	/**
+	 * @brief return a specific line from a listing
+	 * @param n line number
+	 */
+	virtual Common::String getLine(uint n) = 0;
+	/**
+	 * @brief shorthand to get a lump of lines instead of calling getLine a number of times
+	 * Generally you won't need to redefine these
+	 */
+	virtual Common::Array<ListingLine> getLines(uint centre, uint before, uint after);
+	virtual Common::Array<ListingLine> getLines(uint beginning, uint end);
+};
+
+} // End of namespace Wintermute
+
+#endif /* LISTING_H_ */