code: private final String getTokenRelative(int i)
    {
  
      String tok;
      int relative = m_queueMark + i;
  
      if ((relative > 0) && (relative < m_ops.getTokenQueueSize()))
      {
        tok = (String) m_ops.m_tokenQueue.elementAt(relative);
      }
      else
      {
        tok = null;
      }
  
      return tok;
    }
docs: Retrieve a token relative to the current token.
  
  @param i Position relative to current token.
  
  @return The string at the given index, or null if the index is out
  of range.