code: public final void reset() {
      equivalencesMatched.clear();
      allFeatsIn = false;
      tokCnt = 0;
      featuresFound.clear();
      tmpFeaturesFound.clear();
      tokSequence.clear();
      tokSequenceEquivalences.clear();
      readingsCounter = 1;
      uniMatched = false;
      uniAllMatched = false;
      inUnification = false;
    }
docs: Resets after use of unification. Required.