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diff --git a/include/touchwrap.h b/include/touchwrap.h
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+/*
+   ds81 - Nintendo DS ZX81 emulator.
+
+   Copyright (C) 2006  Ian Cowburn <ianc@noddybox.co.uk>
+   
+   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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+  
+   $Id: touchwrap.h 35 2007-02-16 01:10:41Z ianc $
+*/
+#ifndef DS81_TOUCHWRAP_H
+#define DS81_TOUCHWRAP_H
+
+/* Don't know whether I have a problem with my DS or the library, but sometimes
+   the touchscreen value is off (one co-ord generally completely out).
+
+   To alleviate this, and as this is a simple touch screen keyboard, allow
+   touchs to be averaged if the config says so.  And averaged touch just means
+   that two touchs have to happen within 5 pixels on X and Y before being
+   allowed.
+
+   If not configured to average, this simply reads the touchscreen position
+   and returns true.
+*/
+int		AllowTouch(touchPosition *tp);
+
+#endif	/* DS81_TOUCHWRAP_H */