         var maxDelta:Number = contentHeight - scrollR.bottom;
         var minDelta:Number = -scrollR.top;
                 
-        // FIXME (cframpto): what if blockDirection!=TB and direction!=LTR?                   
         switch (navigationUnit)
         {
             case NavigationUnit.UP:

        // Make sure that if we did a double pass, next time around we'll
        // measure normally
        widthConstraint = NaN;
    }

    /**

            dispatchChangeEvent = false;
        }
        
        var oldContentWidth:Number = _contentWidth;

        var newContentBounds:Rectangle = 
            _textContainerManager.getContentBounds();
        var newContentWidth:Number = newContentBounds.width;
        
        // TODO:(cframpto) Figure out if we still need these checks.
        // Error correction for rounding errors.  It shouldn't be so but
        // the contentWidth can be slightly larger than the requested
        // compositionWidth.
