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Parameter Name



To explicitly specify the value type format for a property value.

Format Definition

This property parameter is defined by the following notation:

 valuetypeparam = "VALUE" "=" valuetype

 valuetype  = ("BINARY"
            / "BOOLEAN"
            / "CAL-ADDRESS"
            / "DATE"
            / "DATE-TIME"
            / "DURATION"
            / "FLOAT"
            / "INTEGER"
            / "PERIOD"
            / "RECUR"
            / "TEXT"
            / "TIME"
            / "URI"
            / "UTC-OFFSET"
            / x-name
            ; Some experimental iCalendar value type.
            / iana-token)
            ; Some other IANA-registered iCalendar value type.


This parameter specifies the value type and format of the property value. The property values MUST be of a single value type. For example, a "RDATE" property cannot have a combination of DATE-TIME and TIME value types.

If the property's value is the default value type, then this parameter need not be specified. However, if the property's default value type is overridden by some other allowable value type, then this parameter MUST be specified.

Applications MUST preserve the value data for x-name and iana- token values that they don't recognize without attempting to interpret or parse the value data.

This document was automatically converted to XHTML using an RFC to HTML converter with the original text document at the Internet Engineering Task Force web site at .  The original text document should be referred to if there are any errors or discrepancies found in this document.

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