     /**
      *  The RadioButtonGroup object to which this RadioButton belongs.
      *  When creating radio buttons to put in a RadioButtonGroup, it is 
-     *  advisable to use group for all of the buttons or groupName for all of 
-     *  the buttons. The groupName will be set to the generated name of the 
+     *  advisable to use either the <code>group</code> property 
+     *  or the <code>groupName</code> property for all of 
+     *  the buttons.  The <code>groupName</code> property will be set 
+     *  to the generated name of the 
      *  RadioButtonGroup object.
      *  
      *  @default the default RadioButtonGroup

     *  Specifies the name of the group to which this RadioButton control belongs, or 
     *  specifies the value of the <code>id</code> property of a RadioButtonGroup control
     *  if this RadioButton is part of a group defined by a RadioButtonGroup control.
     *  All radio buttons with the same groupName will be in the same tab group
     *  even if they belong to different radio button groups.  When creating
     *  radio buttons to put in a RadioButtonGroup, it is advisable to
     *  use group for all of the buttons or groupName for all of the buttons.
     *
     *  @default "RadioButtonGroup_number" where number is an integer greater
     *  than or equal to 0.
     *  @see #group
     * 
     *  @langversion 3.0

 *  within a set of mutually exclusive choices.
 *  A RadioButton group is composed of two or more RadioButton controls
 *  with the same <code>groupName</code> property.
 *  While grouping RadioButton instances in a RadioButtonGroup is optional,
 *  a group lets you do things like set a single event handler on a group of buttons,
 *  rather than on each individual button.
 *
 *  <p>The RadioButton group can refer to a group created by the
 *  <code>&lt;s:RadioButtonGroup&gt;</code> tag.
 *  The user selects only one member of the group at a time.
 *  Selecting an unselected group member deselects the currently selected
 *  RadioButton control within that group.</p>
 *
 *  <p>The RadioButton control has the following default characteristics:</p>
 *     <table class="innertable">
