Rendering opening and closing brackets as pieces in SAS macro language programming caused me a bit of grief until I got it sorted a few months back. All of the usual suspects for macro quoting (or escaping in other computer languages) let me down: even the likes of %SUPERQ or %NRBQUOTE didn’t do the trick. The honours were left to %NRQUOTE(%(), which performed what was required very respectably indeed. The second "%" escapes the bracket for %NRQUOTE to do the rest.