docs: function set_codeword(cw, len, skip) {
  		if (typeof len === 'undefined') len = 17;
  		if (typeof skip === 'undefined') skip = -1;
  
  		for (var i = 0, j = 0; i < len; i++) {
  			if (i !== skip) codeword[cwmap[j++]] = cw[i];
  		}
  	}