docs: private void findStandaloneAreas(Box boxroot, Area arearoot)
      {
          if (boxroot.isVisible())
          {
              for (int i = 0; i < boxroot.getChildCount(); i++)
              {
                  Box child = boxroot.getChildAt(i);
  		        if (child.isVisible())
  		        {
  	                if (isVisuallySeparated(child))
  	                {
  	                    Area newnode = new AreaImpl(child);
  	                    if (newnode.getWidth() > 1 || newnode.getHeight() > 1)
  	                    {
                              findStandaloneAreas(child, newnode);
  	                    	arearoot.appendChild(newnode);
  	                    }
  	                }
  	                else
  	                    findStandaloneAreas(child, arearoot);
  		        }
              }
          }
      }