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diff --git a/engines/glk/magnetic/magnetic_defs.h b/engines/glk/magnetic/magnetic_defs.h
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+++ b/engines/glk/magnetic/magnetic_defs.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 MAGNETIC_DEFS_H
+#define MAGNETIC_DEFS_H
+
+#include "common/scummsys.h"
+
+namespace Glk {
+namespace Magnetic {
+
+/*****************************************************************************\
+* Type definitions for Magnetic
+*
+* Note: When running into trouble please ensure that these types have the
+*       correct number of bits on your system !!!
+\*****************************************************************************/
+
+typedef byte type8;
+typedef int8 type8s;
+typedef uint16 type16;
+typedef int16 type16s;
+typedef uint32 type32;
+typedef int32 type32s;
+
+#ifndef BYTE_MAX
+#define BYTE_MAX 255
+#endif
+#ifndef CHAR_BIT
+#define CHAR_BIT 8
+#endif
+#ifndef UINT16_MAX
+#define UINT16_MAX 0xffff
+#endif
+#ifndef INT32_MAX
+#define INT32_MAX 0x7fffffff
+#endif
+
+#define MAX_HINTS 260
+#define MAX_HCONTENTS 30000
+
+#define MAX_POSITIONS 20
+#define MAX_ANIMS 200
+#define MAX_FRAMES 20
+#define MAX_STRING_SIZE  0xFF00
+#define MAX_PICTURE_SIZE 0xC800
+#define MAX_MUSIC_SIZE   0x4E20
+#define MAX_HITEMS 25
+
+/****************************************************************************\
+* Compile time switches
+\****************************************************************************/
+
+/* Switch:  SAVEMEM
+   Purpose: Magnetic loads a complete graphics file into memory by default.
+            Setting this switch you tell Magnetic to load images on request
+            (saving memory, wasting load time)
+
+#define SAVEMEM
+*/
+
+/* Switch:  NO_ANIMATION
+   Purpose: By default Magnetic plays animated graphics.
+            Setting this switch to ignore animations, Magnetic shows the
+            static parts of the images anyway!
+
+#define NO_ANIMATION
+*/
+
+/****************************************************************************\
+* Miscellaneous enums/types
+*
+\****************************************************************************/
+
+enum { GMS_PALETTE_SIZE = 16 };
+
+enum { GMS_INPUTBUFFER_LENGTH = 256 };
+
+enum { GMS_STATBUFFER_LENGTH = 1024 };
+
+enum GammaMode {
+	GAMMA_OFF, GAMMA_NORMAL, GAMMA_HIGH
+};
+
+/* Hint type definitions. */
+enum {
+	GMS_HINT_TYPE_FOLDER = 1,
+	GMS_HINT_TYPE_TEXT = 2
+};
+
+} // End of namespace Magnetic
+} // End of namespace Glk
+
+#endif