docs: def tab(tab_name, element_list=None, section_list=None):
      """
      Returns a dictionary representing a new tab to display elements.
      This can be thought of as a simple container for displaying multiple
      types of information.
  
      Args:
          tab_name: The title to display
          element_list: The list of elements to display. If a single element is
                        given it will be wrapped in a list.
          section_list: A list of sections to display.
  
      Returns:
          A dictionary with metadata specifying that it is to be rendered
          as a page containing multiple elements and/or tab.
      """
      _tab = {
              'Type': 'Tab',
              'Title': tab_name,
              }
  
      if element_list is not None:
          if isinstance(element_list, list):
              _tab['Elements'] = element_list
          else:
              _tab['Elements'] = [element_list]
      if section_list is not None:
          if isinstance(section_list, list):
              _tab['Sections'] = section_list
          else:
              if 'Elements' not in section_list:
                  _tab['Elements'] = element_list
              else:
                  _tab['Elements'].append(element_list)
      return _tab