title: Change the focus from one Text widget to another
body: <p>I'm new to Python and I'm trying to create a simple GUI using Tkinter. </p>
  
  <p>So often in many user interfaces, hitting the tab button will change the focus from one Text widget to another. Whenever I'm in a Text widget, tab only indents the text cursor.</p>
  
  <p>Does anyone know if this is configurable? </p>