code: static public boolean isNaturalDocOrder(int analysis)
    {
      if(canCrissCross(analysis) || isSet(analysis, BIT_NAMESPACE) ||
         walksFilteredList(analysis))
        return false;
        
      if(walksInDocOrder(analysis))
        return true;
        
      return false;
    }
docs: Tell if the pattern can be 'walked' with the iteration steps in natural
  document order, without duplicates.
  
  @param analysis The general analysis of the pattern.
  
  @return true if the walk can be done in natural order.
  
  @throws javax.xml.transform.TransformerException