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diff --git a/libical/src/libical/icalrestriction.h b/libical/src/libical/icalrestriction.h
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+/* -*- Mode: C -*- */
+/*======================================================================
+  FILE: icalrestriction.h
+  CREATOR: eric 24 April 1999
+  
+  $Id$
+
+
+  (C) COPYRIGHT 1999 Eric Busboom 
+  http://www.softwarestudio.org
+
+  The contents of this file are subject to the Mozilla Public License
+  Version 1.0 (the "License"); you may not use this file except in
+  compliance with the License. You may obtain a copy of the License at
+  http://www.mozilla.org/MPL/
+ 
+  Software distributed under the License is distributed on an "AS IS"
+  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+  the License for the specific language governing rights and
+  limitations under the License.
+
+  The original author is Eric Busboom
+  The original code is icalrestriction.h
+
+  Contributions from:
+     Graham Davison (g.m.davison@computer.org)
+
+
+======================================================================*/
+
+#include "ical.h"
+
+#ifndef ICALRESTRICTION_H
+#define ICALRESTRICTION_H
+
+/* These must stay in this order for icalrestriction_compare to work */
+typedef enum icalrestriction_kind {
+    ICAL_RESTRICTION_NONE=0,		/* 0 */
+    ICAL_RESTRICTION_ZERO,		/* 1 */
+    ICAL_RESTRICTION_ONE,		/* 2 */
+    ICAL_RESTRICTION_ZEROPLUS,		/* 3 */
+    ICAL_RESTRICTION_ONEPLUS,		/* 4 */
+    ICAL_RESTRICTION_ZEROORONE,		/* 5 */
+    ICAL_RESTRICTION_ONEEXCLUSIVE,	/* 6 */
+    ICAL_RESTRICTION_ONEMUTUAL,		/* 7 */
+    ICAL_RESTRICTION_UNKNOWN		/* 8 */
+} icalrestriction_kind;
+
+int 
+icalrestriction_compare(icalrestriction_kind restr, int count);
+
+icalrestriction_kind
+icalrestriction_get_property_restriction(icalproperty_method method,
+					 icalcomponent_kind component,
+					 icalproperty_kind property);
+
+icalrestriction_kind
+icalrestriction_get_component_restriction(icalproperty_method method,
+					 icalcomponent_kind component,
+					  icalcomponent_kind subcomponent);
+
+int
+icalrestriction_is_parameter_allowed(icalproperty_kind property,
+                                       icalparameter_kind parameter);
+
+int icalrestriction_check(icalcomponent* comp);
+
+
+#endif /* !ICALRESTRICTION_H */
+
+
+