code: def get_bool_relative(strings: Sequence[str],
                        prefix1: str,
                        delta: int,
                        prefix2: str,
                        ignoreleadingcolon: bool = False) -> Optional[bool]:
      
      return get_bool_raw(get_string_relative(
          strings, prefix1, delta, prefix2,
          ignoreleadingcolon=ignoreleadingcolon))
docs: Fetches a boolean parameter via :func:`get_string_relative`.