docs: def filesavebox(msg=None, title=None, argInitialFile=None):
      """Original doc: A file to get the name of a file to save.
          Returns the name of a file, or None if user chose to cancel.
  
          if argInitialFile contains a valid filename, the dialog will
          be positioned at that file when it appears.
          """
      return psidialogs.ask_file(message=msg, title=title, default=argInitialFile, save=True)