title: How to set the tab order in a tkinter application?
body: <p>I have been searching for a way to set the tab order in a tkinter application, that I have been working on.  Currently the default order seems to be working from top-down, but it requires using <kbd>CTRL</kbd> + <kbd>Tab</kbd> to cycle through the controls.</p>
  
  <p>Is there any way to customize the order and, more so, change the <kbd>CTRL</kbd> + <kbd>Tab</kbd> to just Tab?</p>