psed.html">elapsed</a> count is increasing monotonically. If the <a href="dart-core/Stopwatch-class.html">Stopwatch</a> has
been stopped, then calling start again restarts it without resetting the
<a href="dart-core/Stopwatch/elapsed.html">elapsed</a> count.</p>
<p>If the <a href="dart-core/Stopwatch-class.html">Stopwatch</a> is currently running, then calling start does nothing.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <p