This window appears on
      right-clicking on a transition moment or transition moments in the
      
tree view in the 
constants window and selecting
      "Rename".  This allows you to select the states (for a
      transition moment) or manifold (for transition moments) connected
      by the transition. Use the "Bra" and "Ket" drop down boxes to
      select the required states or manifolds.
      
    
 
    This is also displayed on right-clicking on a