                               width=10)
          scale.pack(side=tk.RIGHT)
          scale.bind("<FocusIn>", self._clear_combo_focus)  # Remove auto-focus on widget text box
          logger.debug("Added scale combo: '%s'", scale)
          return scale
  
      def _clear_combo_focus(self, *args) -> None:  # pylint: disable=unused-argument
          """ Remove the highlighting and stealing of focus that the combobox annoyingly
          implements. """
 
</s> remove         scale = ttk.Combobox(self,
 </s> add         scale = ttk.Combobox(self._frame,
        self._track_widget(scale)
                               width=10)
          scale.pack(side=tk.RIGHT)
          scale.bind("<FocusIn>", self._clear_combo_focus)  # Remove auto-focus on widget text box
        self._track_widget(scale)
          logger.debug("Added scale combo: '%s'", scale)
          return scale
  
      def _clear_combo_focus(self, *args) -> None:  # pylint: disable=unused-argument
          """ Remove the highlighting and stealing of focus that the combobox annoyingly
          implements. """
keep keep add keep keep keep keep keep keep
 GUI - Preview updates
  - Training preview. Embed preview pop-out window
  - Bugfix - convert/extract previews 
lib/training/preview_tk.py