Created: [Apr 6, 2004]

Defines a TZURL iCalendar component property.

    4.8.3.5 Time Zone URL

       Property Name: TZURL

       Purpose: The TZURL provides a means for a VTIMEZONE component to
       point to a network location that can be used to retrieve an up-to-
       date version of itself.

       Value Type: URI

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

       Conformance: This property can be specified in a "VTIMEZONE" calendar
       component.

       Description: The TZURL provides a means for a VTIMEZONE component to
       point to a network location that can be used to retrieve an up-to-
       date version of itself. This provides a hook to handle changes
       government bodies impose upon time zone definitions. Retrieval of
       this resource results in an iCalendar object containing a single
       VTIMEZONE component and a METHOD property set to PUBLISH.

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

         tzurl      = "TZURL" tzurlparam ":" uri CRLF

         tzurlparam = *(";" xparam)

       Example: The following is an example of this property:

         TZURL:http://timezones.r.us.net/tz/US-California-Los_Angeles