Delayed[expr]

represents an expression whose evaluation is delayed until its value is externally requested.

Delayed[expr,fmt]

specifies that the result from evaluating expr should be given in format fmt.

Delayed[expr,{fmt,rform}]

specifies that the result should be given as a response of the form rform.

• Delayed is typically used with CloudDeploy to create a web page whose content is updated whenever the page is requested.
• The following options can be given:

• 	AllowedCloudExtraParameters	None	what overall parameters to allow to be specified
  	CachePersistence	0	how long to maintain a cache of results
  	UpdateInterval	Infinity	how often a browser should request an update

• With the option UpdateIntervalt, Delayed specifies that a web page should be updated in the web browser every t seconds when it is displayed.
• The option AllowedCloudExtraParameters specifies what additional query parameters governing evaluation of expr should be allowed.
• Possible result formats fmt in Delayed[expr,fmt] are:

• 	"fmt"	any format supported by ExportForm
  	fun	an arbitrary function to be applied to expr

• Delayed[expr,"fmt"] is equivalent to Delayed[ExportForm[expr,"fmt"]].
• Delayed is also used to control the resource copying behavior of cloud functions such as DocumentGenerator. Files and cloud objects qualified as Delayed are used in place.