style                                       (Assignable)

        Contains a character string that indicates the characters that are
        used by the radio button's display() method.  The string must contain
        four characters.  The first is the left delimiter.  Its default value
        is the left parenthesis ( ( ) character.  The second is the selected
        indicator.  Its default value is the asterisk (*) character.  The
        third is the unselected indicator.  Its default is the space ( " " )
        character.  The fourth character is the right delimiter.  Its default
        value is the right parenthesis ( ) ) character.

        Note:  In graphic mode, the style instance variable is ignored.