[Name] delay [Required] false [Attribute Constraints] This attribute may not be used with "target" '_internal'. [Type] Value expression [Default Value] '0s' [Description] The character string returned is interpreted as a time interval. The send tag will return immediately, but the message is not dispatched until the delay interval elapses. In this case, all arguments to send are evaluated when the send element is first processed, and not when the message is actually dispatched. Timers are useful for a wide variety of programming tasks, and can be implemented using this attribute. Note: The queue for messages events is maintained locally. Any messages waiting to be sent will be purged when the session that issued this request terminates. [Valid Values] 
A value expression which returns a time designation as defined in CSS2 [CSS2] format