 <b>Req</b> actually indicates whether the
        feature is required if the indicated context exists.
      </li>
      <li>
        The <b>Assertion</b> column specifies the constraint which must be met. If the assertion is actually given in a
        tabular form in the specification, appropriate text is generated but this may not match the text in the
        specification itself. The assertion may also refer to other information not in the text of the assertion. To
        fully understand the asserti