<oRadioButto>:isAccel(<nInkeyValue>)
        --> <lHotKeyStatus>

        <nInkeyValue> is a numeric value that indicates the inkey value to
        check.

        Returns a logical value that indicates whether the value specified by
        <nInkeyValue> should be treated as a hot key.  A value of true (.T.)
        indicates that the key should be treated as a hot key; otherwise, a
        value of false (.F.) indicates that it should not.

        isAccel() is a method of the RadioButto class that is used for
        determining whether a key press should be interpreted as a user
        request to select a radio button.