code: @Override
    public Enumeration listOptions() {
      Vector 		result;
  
      result = new Vector();
  
      result.addElement(new Option(
        "\tWhether to enable debugging output.\n"
  	+ "\t(default off)",
        "D", 0, "-D"));
  
      return result.elements();
    }
docs: Gets an enumeration describing the available options.
  
  @return an enumeration of all the available options.