{
  "http://www.ietf.org/internet-drafts/draft-ietf-calsch-many-xcal-01.txt" = {

    // components
    
    iCalendar = {
      class  = NSMutableDictionary; // "ICalXRoot";
      tagKey = "tag";
      
      ToManyRelationships = {
        "subcomponents" = ( vcalendar );
      };
    };
    
    vcalendar = {
      class  = iCalCalendar; // ICalVCalendar;

      attributes = {
        prodid   = prodId;
        version  = version;
        calscale = calscale;
	method   = method;
      };
      
      ToManyRelationships = {
        events    = ( vevent    );
        todos     = ( vtodo     );
        journals  = ( journals  );
        freeBusys = ( vfreebusy );
        timezones = ( vtimezone );
      };
    };
    
    vevent = {
      class  = iCalEvent;

      attributes = {
      };

      ToManyRelationships = {
        "alarms"          = ( valarm   );
        "attendees"       = ( attendee );
        "recurrenceRules" = ( rrule    );
        "exceptionRules"  = ( exrule   );
        "exceptionDates"  = ( exdate   );
      };
    };
    
    vtodo = {
      class = "iCalToDo";

      attributes = {
      };

      ToManyRelationships = {
        "alarms"    = ( valarm   );
        "attendees" = ( attendee );
      };
    };
    
    valarm = {
      class = "iCalAlarm";

      attributes = {
        rrule = recurrenceRule;
      };
    };
    
    vfreebusy = {
      class = "iCalFreeBusy";
      
      ToManyRelationships = {
        "entries" = ( freebusy );
      };
    };
    
    vtimezone = {
      class = NSMutableDictionary;
      
      attributes = {
        tzid             = timeZoneID;
        "X-LIC-LOCATION" = location;
        daylight         = daylightInfo;
        standard         = standardInfo;
      };
    };
    daylight = {
      class = NSMutableDictionary;
      
      attributes = {
        tzoffsetfrom = tzOffsetFrom;
        tzoffsetto   = tzOffsetTo;
        tzname       = tzName;
        dtstart      = startDate;
        rrule        = recurrenceRule;
      };
    };
    standard = {
      class = NSMutableDictionary;
      
      attributes = {
        tzoffsetfrom = tzOffsetFrom;
        tzoffsetto   = tzOffsetTo;
        tzname       = tzName;
        dtstart      = startDate;
        rrule        = recurrenceRule;
      };
    };
    
    // attributes
    
    dtstamp = {
      class      = iCalDateHolder;
      key        = "timeStampAsDate";
      tagKey     = "tag";
      contentKey = "string";
    };
    created = {
      class      = iCalDateHolder;
      key        = "created";
      tagKey     = "tag";
      contentKey = "string";
    };
    "last-modified" = {
      class      = iCalDateHolder;
      key        = "lastModified";
      tagKey     = "tag";
      contentKey = "string";
    };
    
    dtstart = {
      class = iCalDateHolder;
      key   = "startDate";
      attributes = {
        tzid = tzid;
      };
      tagKey     = "tag";
      contentKey = "string";
    };
    dtend = {
      class = iCalDateHolder;
      key   = "endDate";
      attributes = {
        tzid = tzid;
      };
      tagKey     = "tag";
      contentKey = "string";
    };
    exdate = {
      class = iCalDateHolder;
      key   = "recurrenceRuleExceptionDate";
      attributes = {
        tzid = tzid;
      };
      tagKey     = "tag";
      contentKey = "string";
    };
    due = {
      class = iCalDateHolder;
      attributes = {
        tzid = tzid;
      };
      tagKey     = "tag";
      contentKey = "string";
    };
    completed = {
      class = iCalDateHolder;
      attributes = {
        tzid = tzid;
      };
      tagKey     = "tag";
      contentKey = "string";
    };
    
    duration = {
      class = NSString;
    };
    
    summary     = { class = NSString; };
    description = { class = NSString; key = comment; };
    comment     = { class = NSString; key = userComment; };
    uid         = { class = NSString; };
    action      = { class = NSString; };
    priority    = { class = NSString; };
    status      = { class = NSString; };
    transp      = { class = NSString; key = transparency; };
    sequence    = { class = NSString; };
    categories  = { class = NSString; };
    class       = { class = NSString; key = accessClass; };
    percent-complete = { class = NSString; key = "percentComplete"; };
    
    attendee = {
      class = iCalPerson;
      attributes = {
        cn = cn;
        rsvp = rsvp;
        role = role;
        partstat = partStat;
      };
      contentKey = "email";
    };
    organizer = {
      class      = iCalPerson;
      attributes = {
        cn = cn;
      };
      contentKey = "email";
    };
    
    freebusy = {
      class = NSString;
    };
    url = {
      class = NSString;
    };
    
    trigger = {
      class = iCalTrigger;
      attributes = {
        value = valueType;
      };
      contentKey = "value";
    };
    attach = {
      class = iCalAttachment;
      attributes = {
        value = valueType;
      };
      contentKey = "value";
    };

    tzid = {
      class = NSString;
    };
    tzname = {
      class = NSString;
    };
    tzoffsetfrom = {
      class = NSString;
    };
    tzoffsetto = {
      class = NSString;
    };
    rrule = {
      class = iCalRecurrenceRule;
      /*
      attributes = {
        freq       = rrFreq;
        until      = rrUntil;
        count      = rrCount;
        interval   = rrInterval;
        bysecond   = rrBySecondList;
        byminute   = rrByMinuteList;
        byhour     = rrByHourList;
        byday      = rrByDayList;
        bymonthday = rrByMonthDayList;
        byyearday  = rrByYearDayList;
        byweekno   = rrByWeekNumberList;
        bymonth    = rrByMonthList;
        bysetpos   = rrBySetPosList;
        wkst       = rrWeekStart;
      };
      */
      contentKey = "rrule";
      key        = "recurrenceRule";
    };
    location = {
      class = NSString;
    };
    
    // extra tags

    "X-LIC-LOCATION" = {
      class = NSString;
    };
    
    "X-WR-TIMEZONE" = {
      rejectWithContent = YES;
    };
    "X-WR-CALNAME" = {
      rejectWithContent = YES;
    };
    "X-WR-RELCALID" = {
      rejectWithContent = YES;
    };

    "X-MICROSOFT-CDO-TZID" = {
      rejectWithContent = YES;
    };
    "X-MICROSOFT-CDO-BUSYSTATUS" = {
      rejectWithContent = YES;
    };
    "X-MICROSOFT-CDO-INSTTYPE" = {
      rejectWithContent = YES;
    };
    "X-MICROSOFT-CDO-INTENDEDSTATUS" = {
      rejectWithContent = YES;
    };
    "X-MICROSOFT-CDO-ALLDAYEVENT" = {
      rejectWithContent = YES;
    };
    "X-MICROSOFT-CDO-IMPORTANCE" = {
      rejectWithContent = YES;
    };

    "X-PILOTID" = {
      rejectWithContent = YES;
    };
    "X-PILOTSTAT" = {
      rejectWithContent = YES;
    };
  };
}