code: func TextView1(nextSlide func()) (title string, content tview.Primitive) {
  	textView := tview.NewTextView().
  		SetTextColor(tcell.ColorYellow).
  		SetScrollable(false).
  		SetDoneFunc(func(key tcell.Key) {
  			nextSlide()
  		})
  	textView.SetChangedFunc(func() {
  		if textView.HasFocus() {
  			app.Draw()
  		}
  	})
  	go func() {
  		var n int
  		for {
  			n++
  			fmt.Fprintf(textView, "%d ", n)
  			time.Sleep(200 * time.Millisecond)
  		}
  	}()
  	textView.SetBorder(true).SetTitle("TextView implements io.Writer")
  	return "Text 1", Code(textView, 36, 13, textView1)
  }
docs: // TextView1 demonstrates the basic text view.