code: public boolean isParserDirective()
      {
          if (getValue() == null || isCommand() || getValue().length() == 0)
              return false;
          if (getValue().charAt(0) == '_')
              return true;
          if (getValue().length() == 1 && getValue().charAt(0) == '=')
              return true;
          return false;
      }
docs: <p>
  isParserDirective.
  </p>
  
  @return a boolean.