code: func (w *Window) AddStatus(y int, j Justify, format string,
  	args ...interface{}) *Label {
  	l, _ := w.AddWidget(WidgetLabel, 0, y)
  	label := l.(*Label)
  	label.Resize()
  	label.status = true
  	label.justify = j
  
  	// flip attributes
  	a := defaultAttributes()
  	a2 := Attributes{
  		Fg: a.Bg,
  		Bg: a.Fg,
  	}
  	label.SetAttributes(a2)
  
  	// print
  	label.SetText(format, args...)
  
  	return label
  }
docs: // AddStatus is an alternative Label initializer.  A Status is a label that has
  // the property that it fills an entire line and is justified.  This call
  // implements the NewWidget convention by taking a *Window and and an anchor
  // point to render the widget.