BUILT-IN MATHEMATICA SYMBOL
FormBox
FormBox[boxes, form]
is a low-level box construct which displays as boxes but specifies that rules associated with form should be used to interpret boxes on input.
Create a cell with TraditionalForm style settings applied:
| Out[1]= |  |
Create a cell with StandardForm style settings applied:
| Out[1]= |  |
FormBox affects interpretation of its contents:
| Out[1]= |  |
| Out[2]= |  |
TraditionalForm formatting uses FormBox:
Out[1]//FullForm= |
| |  |
The formatted result looks like this:
Out[2]//TraditionalForm= |
| |  |
New in 3
yields FormBox[input, form]. 
yields FormBox[input, RawForm]. 
