({{, (RefLink[FrontEndDynamicExpression, paclet:ref/FrontEndDynamicExpression]) 
is a global front end option that specifies an expression to be dynamically updated whenever the front end is running.}})

OpenersNotesSection(Spacer1)Details

(RefLink[FrontEndDynamicExpression, paclet:ref/FrontEndDynamicExpression])->(RefLink[Dynamic, paclet:ref/Dynamic])[expr] causes the expression to be tracked and updated in the usual way, except that expr is not displayed anywhere.

(RefLink[FrontEndDynamicExpression, paclet:ref/FrontEndDynamicExpression]) can be set using (RefLink[SetOptions, paclet:ref/SetOptions])[scope,FrontEndDynamicExpression->(RefLink[Dynamic, paclet:ref/Dynamic])[expr]], where scope can be (RefLink[$FrontEnd, paclet:ref/$FrontEnd]) or (RefLink[$FrontEndSession, paclet:ref/$FrontEndSession]).

(RefLink[FrontEndDynamicExpression, paclet:ref/FrontEndDynamicExpression]) can also be set using the Option Inspector ((MenuGrayLink[Format, paclet:guide/FormatMenu]) ▶ (MenuGrayLink[Option Inspector, paclet:ref/menuitem/OptionInspector])).

({{DocumentationFooterIconsRelatedFunction.png, ({{See Also}, {(RefLink[NotebookDynamicExpression, paclet:ref/NotebookDynamicExpression])  ▪  (RefLink[CellDynamicExpression, paclet:ref/CellDynamicExpression])  ▪  (RefLink[DynamicWrapper, paclet:ref/DynamicWrapper])}})}})

({{DocumentationFooterIconsRelatedTutorial.png, ({{Tutorials}, {▪(RefLinkPlain[The Option Inspector, paclet:tutorial/OptionInspector])}})}})