hotBox                                       (Assignable)

        Contains an optional string that specifies the characters to use when
        drawing a box around the radio group when it has input focus.  Its
        default value is a double-line box.

        Standard Box Types
        ---------------------------------------------------------------------
        Constant            Description
        ---------------------------------------------------------------------
        B_SINGLE            Single-line box
        B_DOUBLE            Double-line box
        B_SINGLE_DOUBLE     Single-line top/bottom, double-line sides
        B_DOUBLE_SINGLE     Double-line top/bottom, single-line sides
        ---------------------------------------------------------------------

        Box.ch contains manifest constants for the RadioGroup:hotBox value.