The Default Keys

  Here is an example from the default key accelerators from
  the resource configuration file.

  Keys  DefaultKeyBindings
  {
      Shift<Key>Escape    window|icon          f.post_wmenu
      Alt<Key>Tab          root|icon|window   f.next_key
      Alt  Shift<Key>Tab   root|icon|window   f.prev_key
  }

  These items

  1.  Display the Window menu from a window or icon by
      pressing Shift and Escape and

  2.  Move focus to the next window by pressing Alt Tab.

  3.  Move focus to the previous window by pressing Alt Shift

      Tab.