parameters: (self, help_intro)
docstring: Set an introductory message to help output.
  
      Args:
        help_intro: (RichTextLines) Rich text lines appended to the
          beginning of the output of the command "help", as introductory
          information.
docstring_summary: Set an introductory message to help output.
docstring_tokens: Set an introductory message to help output .
function: def set_help_intro(self, help_intro):
      """Set an introductory message to help output.
  
      Args:
        help_intro: (RichTextLines) Rich text lines appended to the
          beginning of the output of the command "help", as introductory
          information.
      """
      self._help_intro = help_intro
function_tokens: def set_help_intro ( self , help_intro ) : self . _help_intro = help_intro