--- /dev/null
+/*
+ Copyright (C) 2018, Unvanquished Developers
+ All Rights Reserved.
+
+ This file is part of NetRadiant.
+
+ NetRadiant 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.
+
+ NetRadiant 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 NetRadiant; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#if !defined( INCLUDED_CRN_H )
+#define INCLUDED_CRN_H
+
+class Image;
+
+class ArchiveFile;
+
+Image *LoadCRN(ArchiveFile &file);
+
+#endif
+