Working with @functions

All @functions evaluate to a value and can be placed in a formula anywhere a value of that type can be placed. When the formula executes, the value of the formula takes the place of the formula. Some formulas also have side-effects, that is, they cause actions to occur. For example, @Prompt causes a message box to appear.

Most @functions can be used in formulas for any Notes® object, but some @functions are restricted in their applicability. The following table lists the @functions that are restricted and lists the Notes objects in which they can be used effectively. In addition, for an @function to return information on the current database, view, document, or field, these objects must be current.

Restricted function	Function only works in these Notes objects
@All	Replication formula, agent, view selection formula
@AllChildren	Replication formula, view selection formula
@AllDescendants	Replication formula, view selection formula
@Command	Toolbar button, manual agent, action hotspot
@DbColumn (Domino® data source)	Toolbar button, action, hotspot, field design, agent except mail
@DbLookup (Domino data source)	Toolbar button, action, hotspot, field design, agent except mail
@DeleteDocument	Agent
@DeleteField	Agent
@DocChildren	Column formula, window title formula
@DocDescendants	Column formula, window title formula
@DocLevel	Column formula, window title formula
@DocMark	Agent
@DocNumber	Column formula, window title formula
@DocParentNumber	Column formula, window title formula
@DocSiblings	Column formula, window title formula
@Failure	Field validation formula
ENVIRONMENT	All except formula pop-up hotspot
@Environment	All except formula pop-up hotspot when writing
FIELD	Toolbar button, agent, action hotspot, field design
@IsCategory	Column formula
@IsDocBeingLoaded	Form design, field design
@IsDocBeingMailed	Button, hotspot, field design
@IsDocBeingRecalculated	Button, hotspot, field design
@IsDocBeingSaved	Button, hotspot, field design
@IsExpandable	Column formula
@IsNewDoc	Toolbar button, window title formula, form design, field design
@MailSend	Toolbar button, agent, action hotspot
@PickList	Toolbar button, manual agent, action hotspot, field design
@Platform	Toolbar button, manual agent, hotspot, view design except selection and column formulas, form design, field design
@Prompt	Toolbar button, manual agent, action hotspot, field design
@Responses	Window title formula, field design
@Return	Toolbar button, agent, hotspot, field design
SELECT	Replication formula, agent, view selection formula
@SetDocField	Toolbar button, agent, action hotspot, field design
@SetEnvironment	All except formula pop-up hotspot
@SetField	Toolbar button, agent, action hotspot, field design
@Success	Validation formula
@Unavailable	Agent
@ViewTitle	Agent