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Property Name



This property defines the action to be invoked when an alarm is triggered.

Value Type


Property Parameters

IANA and non-standard property parameters can be specified on this property.


This property MUST be specified once in a "VALARM" calendar component.


Each "VALARM" calendar component has a particular type of action with which it is associated. This property specifies the type of action. Applications MUST ignore alarms with x-name and iana-token values they don't recognize.

Format Definition

This property is defined by the following notation:

 action      = "ACTION" actionparam ":" actionvalue CRLF

 actionparam = *(";" other-param)

actionvalue = "AUDIO" / "DISPLAY" / "EMAIL" / iana-token / x-name


The following are examples of this property in a "VALARM" calendar component:



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