({{, (RefLink[MultilineFunction, paclet:ref/MultilineFunction]) 
is an option for (RefLink[UnderscriptBox, paclet:ref/UnderscriptBox]) and related box objects that specifies what to do when the contents of a box object are too long to fit on one line.}})

OpenersNotesSection(Spacer1)Details

With the default setting (RefLink[MultilineFunction, paclet:ref/MultilineFunction])->(RefLink[Automatic, paclet:ref/Automatic]), reformatting may take place to extend the contents of a box object across multiple lines. This may, for example, involve converting a two-dimensional fraction into a fraction that uses a "/", or in the case of a radical sign, using "^" notation to specify the exponent. The point at which the line break is applied is indicated by a  symbol.

With the setting (RefLink[MultilineFunction, paclet:ref/MultilineFunction])->LineWrapParts, the contents of a box object are linewrapped to fit in the available space.

With the setting (RefLink[MultilineFunction, paclet:ref/MultilineFunction])->(RefLink[None, paclet:ref/None]), the contents of a box object are not split across multiple lines.

For a selected box object, (RefLink[MultilineFunction, paclet:ref/MultilineFunction]) is set as an option for the box object, and applies only to the selection.

At the cell level, (RefLink[MultilineFunction, paclet:ref/MultilineFunction]) is set, for example, as a suboption of the (RefLink[UnderscriptBoxOptions, paclet:ref/UnderscriptBoxOptions]) option for cells. It specifies the default setting of (RefLink[MultilineFunction, paclet:ref/MultilineFunction]) for any (RefLink[UnderscriptBox, paclet:ref/UnderscriptBox]) object in the cell. The same applies for other boxes with their corresponding box options.

({{DocumentationFooterIconsRelatedFunction.png, ({{See Also}, {(RefLink[UnderscriptBox, paclet:ref/UnderscriptBox])  ▪  (RefLink[OverscriptBox, paclet:ref/OverscriptBox])  ▪  (RefLink[UnderoverscriptBox, paclet:ref/UnderoverscriptBox])  ▪  (RefLink[SubscriptBox, paclet:ref/SubscriptBox])  ▪  (RefLink[GridBox, paclet:ref/GridBox])  ▪  (RefLink[ScriptSizeMultipliers, paclet:ref/ScriptSizeMultipliers])}})}})

({{DocumentationFooterIconsRelatedTutorial.png, ({{Tutorials}, {▪(RefLinkPlain[Representing Textual Forms by Boxes, paclet:tutorial/RepresentingTextualFormsByBoxes])}})}})