Created: [Apr 6, 2004]

Defines a CLASS iCalendar property.

    4.8.1.3 Classification

       Property Name: CLASS

       Purpose: This property defines the access classification for a
       calendar component.

       Value Type: TEXT

       Property Parameters: Non-standard property parameters can be
       specified on this property.

       Conformance: The property can be specified once in a "VEVENT",
       "VTODO" or "VJOURNAL" calendar components.

       Description: An access classification is only one component of the
       general security system within a calendar application. It provides a
       method of capturing the scope of the access the calendar owner
       intends for information within an individual calendar entry. The
       access classification of an individual iCalendar component is useful
       when measured along with the other security components of a calendar
       system (e.g., calendar user authentication, authorization, access
       rights, access role, etc.). Hence, the semantics of the individual
       access classifications cannot be completely defined by this memo
       alone. Additionally, due to the "blind" nature of most exchange
       processes using this memo, these access classifications cannot serve
       as an enforcement statement for a system receiving an iCalendar
       object. Rather, they provide a method for capturing the intention of
       the calendar owner for the access to the calendar component.

       Format Definition: The property is defined by the following notation:

         class      = "CLASS" classparam ":" classvalue CRLF

         classparam = *(";" xparam)

         classvalue = "PUBLIC" / "PRIVATE" / "CONFIDENTIAL" / iana-token
                    / x-name
         ;Default is PUBLIC

       Example: The following is an example of this property:

         CLASS:PUBLIC