      *  The effect target is responsible for the hiding the focus ring. 
      *  Subclasses of the UIComponent class hide the focus ring automatically. 
      *  If the effect target is not a subclass of the UIComponent class,
-     *  you must add functionality to it to hide the focus ring.
+     *  add functionality to it to hide the focus ring.
      *
      *  <p>Set this property to <code>true</code>
      *  to hide the focus ring during the effect.</p>

     *  <p>For mask effects, the mask is not removed automatically
     *  when the effect is stopped.
     *  Running further mask effects on the same target(s)
     *  without first removing the mask may produce unexpected results.</p>
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9


    /**
     *  Returns an Array of Strings, where each String is the name
     *  of a property changed by this effect.
     *  For example, the Move effect returns an Array that contains
     *  <code>"x"</code> and <code>"y"</code>.
     *
     *  <p>Every subclass of Effect must implement this method.
     *  The EffectManager uses this method 
     *  to ensure that no two effects are trying to animate
     *  the same property of the same object at the same time.</p>
     *
