Low-level box construct for framed content display.
FrameBox[box]
- Background — default Automatic
- BaselinePosition — default Automatic
- BaseStyle — default { }
- ContentPadding — default True
- FrameMargins — default Automatic
- FrameStyle — default { }
- ImageMargins — default 0.
- ImageSize — default Automatic
- RoundingRadius — default { 0. , 0. }