code: function UNICODE() {
          var _func = 'UNICODE';
          return function (buffer, index, depth) {
              if (typeof depth === "undefined") { depth = 0; }
              _trace(_func, depth, true);
              var r;
  
              if (index < buffer.length) {
                  r = R.ok(paka.P.UNICODE, index, 1, null);
              } else {
                  r = R.error(paka.P.UNICODE, index, null, 'Expects a unicode character');
              }
  
              paka.S.ERROR == r.status && _update_last_error(r);
              _trace(_func, depth, false, r.status);
              return r;
          };
      }
docs: Unicode: matches a unicode character, exmaple: 'L'