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  • OverscriptBox[ x , y ] represents in input and output.
  • Inside \( ... \) OverscriptBox[ x , y ] can be input as x \& y.
  • In a notebook an OverscriptBox can be created using 7 or &. moves out of the overscript position.
  • In StandardForm and InputForm, OverscriptBox[ x , y ] is interpreted on input as Overscript[ x , y ].
  • The following special interpretations are made:
  • For these special cases special input forms such as x\ &_ can be used.
  • The baseline of OverscriptBox[ x , y ] is taken to be the baseline of x.
  • OverscriptBox[ x , y ] is usually output with y in a smaller font than x.
  • With the option setting LimitsPositioning->True y is placed in an overscript position when the whole OverscriptBox is displayed large, and in a superscript position when it is displayed smaller.
  • In StandardForm, explicit OverscriptBox objects are output literally. You can use DisplayForm to see the display form of such objects.
  • See the Mathematica book: Section 2.8.10.
  • See also: UnderscriptBox, UnderoverscriptBox, SuperscriptBox, GridBox, FractionBox, ScriptSizeMultipliers.