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diff --git a/engines/glk/hugo/stringfn.h b/engines/glk/hugo/stringfn.h
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+++ b/engines/glk/hugo/stringfn.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 GLK_HUGO_STRINGFN
+#define GLK_HUGO_STRINGFN
+
+#include "common/algorithm.h"
+
+namespace Glk {
+namespace Hugo {
+
+#define NUM_TEMPSTRINGS 2
+
+/**
+ * The following string-manipulation functions closely mimic BASIC-language string functionality.
+ * They do not alter the provided string; instead, they return a pointer to a static (modified) copy.
+ */
+class StringFunctions {
+private:
+	char _tempString[NUM_TEMPSTRINGS][1025];
+	int _tempstringCount;
+
+	char *GetTempString();
+public:
+	StringFunctions() : _tempstringCount(0) {
+		Common::fill(&_tempString[0][0], &_tempString[NUM_TEMPSTRINGS][1025], '\0');
+	}
+
+	char *Left(char a[], int l);
+
+	char *Ltrim(char a[]);
+
+	char *Mid(char a[], int pos, int n);
+
+	char *Right(char a[], int l);
+
+	char *Rtrim(char a[]);
+
+	char *hugo_strcpy(char *s, const char *t);
+};
+
+
+} // End of namespace Hugo
+} // End of namespace Glk
+
+#endif