Radio button selection bar
RadioButtonBar[x, {val1, val2, …}]
RadioButtonBar[Dynamic[x], {val1, val2, …}]
RadioButtonBar[x, {val1 -> lbl1, val2 -> lbl2, …}]
- Appearance — default Automatic
- Background — default Automatic
- BaselinePosition — default Automatic
- BaseStyle — default { }
- Enabled — default Automatic
- ImageMargins — default 0
- LabelStyle — default { }