ption and can be displayed in timeline. Binary
            annotations are key-value pairs attached to trace itself.
        </li>
        <li>
            <em>Submitting</em>. After some message was explicitly marked as response to traced message,
            corresponding trace is sent to (external) collector service. If response remains unspecified,
            trace will be sent anyway after some timeout. Any annotations written to already submitted
            trace are ignored.
        </li>
    </ol>