3.7.3. Product Identifier
This property specifies the identifier for the product that created the iCalendar object.
IANA and non-standard property parameters can be specified on this property.
The property MUST be specified once in an iCalendar object.
The vendor of the implementation SHOULD assure that this is a globally unique identifier; using some technique such as an FPI value, as defined in [ISO.9070.1991].
This property SHOULD NOT be used to alter the interpretation of an iCalendar object beyond the semantics specified in this memo. For example, it is not to be used to further the understanding of non- standard properties.
This property is defined by the following notation:
prodid = "PRODID" pidparam ":" pidvalue CRLF
pidparam = *(";" other-param)
pidvalue = text ;Any text that describes the product and version ;and that is generally assured of being unique.
The following is an example of this property. It does not imply that English is the default language.
PRODID:-//ABC Corporation//NONSGML My Product//EN
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