li>
    </ul>
  </li>
  <li>
    Feature status is a factor in test coverage in the report:
    <ul>
		  <li>
        Required specification features must have at least two
        implementations. Implementations that do not implement a required
        specification feature must document the reason for not implementing
        the feature.
      </li>
		  <li>
        Optional specification features must have at least one implementation.
        Implementations that do not implement an optional specificat