docs: def format_h4(s, format="text", indents=0):
      """
      Encloses string in format text
  
      Args, Returns: see format_h1()
      """
  
      _CHAR = "^"
      if format.startswith("text"):
          return format_underline(s, _CHAR, indents)
      elif format.startswith("markdown"):
          return ["#### {}".format(s)]
      elif format.startswith("rest"):
          return format_underline(s, _CHAR, 0)