>
      <thead>
        <tr>
          <th title="Unique identifier for assertion, and link to assertion in context of the specification.">ID</th>
          <th title="Functional groupings of assertions.">Category</th>
          <th title="Required.  Y if the assertion is mandatory, N if it is optional.">Req</th>
          <th title="Indicates if an assertion is only applicable in a specific context.">Context</th>
          <th title="Text of the assertion from the specification.">Assertion</th>
          <