tructor argument.
        The second argument to the constructor sets the timer to expire 5 seconds
        from now.
      </p>
<p>
        In this simple example we perform a blocking wait on the timer. That is,
        the call to <a class="link" href="../reference/basic_deadline_timer/wait.html" title="basic_deadline_timer::wait">deadline_timer::wait()</a>
        will not return until the timer has expired, 5 seconds after it was created
        (i.e. not from when the wait starts).
      </p>
<p>
    