(See the NounDomain specification in Appendix A9.) This routine passes on any REPARSE_CODE, as it must, but keeps a matched object in its own third variable, returning the 'skip this text' code to the parser. Thus the parser never sees any third parameter.

Global third;
[ ThirdNoun x;
  x=NounDomain(player,location,0);
  if (x==REPARSE_CODE) return x; if (x==0) return -1; third = x;
  return 0;
];