title: Pop to home screen
body: <p>In my app I fave some screens one after another, and I need to pop to home screen any time. Is there any way to find out is active screen is the first one? Or, may be, there is any function to pop to root screen without cycle of poping to previous ones?</p>
  
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  <p><strong>EDIT</strong> In different words, I need my app to go to previous screen on click on blackberry "back" button (it do this without any additional code), and go to the screen, user first see when starts this application on click on "Home" button from my user interface</p>