code: private String _write_comment(S sequence) {
  		ArrayList<String> comments = sequence.getNotesList();
  		String output = _write_multi_line("COMMENT", comments.remove(0));
  		for (String comment : comments) {
  			output += _write_multi_line("", comment);
  		}
  
  		return output;
  	}
docs: This is a bit complicated due to the range of possible ways people might
  have done their annotation... Currently the parser uses a single string
  with newlines. A list of lines is also reasonable. A single (long) string
  is perhaps the most natural of all. This means we may need to deal with
  line wrapping.
  
  @param sequence