is the low‐level box representation for in notebook expressions.
- UnderscriptBox is the low-level representation of Underscript. Except for low-level notebook expression manipulation, UnderscriptBox should not need to be used directly.
- Inside \(…\) UnderscriptBox[x,y] can be input as x\+y.
- In a notebook, an UnderscriptBox can be created using Ctrl+4 or Ctrl+$. Ctrl+Space moves out of the underscript position.
- In StandardForm, UnderscriptBox[x,y] is interpreted on input as Underscript[x,y].
- UnderscriptBox[x,"_"] is interpreted as UnderBar[x] or .
- The baseline of UnderscriptBox[x,y] is taken to be the baseline of x.
- UnderscriptBox[x,y] is usually output with y in a smaller font than x.
- With the option setting LimitsPositioning->True, y is placed in an underscript position when the whole UnderscriptBox is displayed larger, and in a subscript position when it is displayed smaller.
- In StandardForm, explicit UnderscriptBox objects are output literally. You can use DisplayForm to see the display form of such objects.
Introduced in 1996
(3.0)| Updated in 2007